A New Discovery May Have Rewritten the Story of Easter Island's Statues 🗿

Scientists found a new statue on Easter Island, inside the crater of an old volcano. They were sure they already catalogued all the Moai. That's what they call those famous stone giants. But this discovery changes what we know about them. First of all, the Moai were rarely alone, so we may hear about more of them in the same area. Second, it's the first Moai found at the bottom of a lake. Scientists were working on a project to restore the marshland in the volcano's crater when they stumbled upon the statue. The lake that was here began to dry up in 2018. For at least 2 or 300 years, it was almost 10 feet deep, so it would be impossible for humans to build or put a statue on the bottom. Scientists think the Moai are over 500 years old. It's possible that the Rapa Nui people who built them probably brought the statue here when the lake was dry in the past. The new find turned out to be slightly over 5 feet tall, which is smaller than the other statues on the island. It's a full-bodied one with recognizable features. Researchers also plan to do radiocarbon dating to find out the exact age of the statue. They don't plan to remove it from where it was found because the oldest members of the Rapa Nui community want it to stay where it is. Moai statues kept scientists puzzled for centuries. They knew that they were built as a dedication to the island's chiefs, but no one could figure out why they chose these various locations for the statues. Most of them were found along the coast of the island. Researchers from Binghamton University in New York decided to study the locations more closely and learned that it had to do with water. Easter Island has porous volcanic soil that absorbs rain easily, so there aren't enough streams or rivers and too little fresh water. Hundreds of years ago, the island's people relied on groundwater discharge to get drinking water. The water stored deep underground in rock or soil layers, called aquifers, reach a point where it flows up to the surface. When this underground water emerges near the coast, it mixes with the salty seawater, but the salt level remains low enough that the water is safe to drink. The islanders used to collect this water directly from the spots where it flowed out, and it looks like that's why they built the Moai along the coast, right near their most important water source. The main bodies of most of the statues were made of volcanic tuff from a local quarry in what used to be a volcano. This material is easy to carve, but not so easy to transport. That's probably why researchers found over 300 unfinished Moai back in the quarry. The rest of them stand in various locations, facing the villages. It looks like the statues were carved lying on their backs. Then, their sculptors detached them from the rock, moved them down slope, and set them in a vertical position to finish the work. When it was done, it was time to move the statue to its platform. And we're talking about moving statues that weighed around half as much as a single-story, unfurnished house, without a car or any modern equipment, for three miles. The locals must have invented some original transportation method. Scientists tried to recreate it and pulled Moai replicas on wooden sleds. They thought someone would have used palm trees for that purpose. But this theory has been debunked. The most successful experiment so far was wielding ropes to rock the statue down the road in a standing position. This sounds legit, because the local Rapa Nui legends mentioned that the Moai walked from the quarry. And of course, they needed a good road to get there. In the early 20th century, researchers Catherine Rutledge found an 800-year-old road network on the island. It was a bunch of pathways, around 15 feet wide, going from the quarry. She thought that those roads were ceremonial, and not built just for the statues. She wasn't a famous scientist back then, so others mostly ignored the theory. Several decades later, famous Norwegian adventurer and archaeologist Thor Heyerdahl published his theory. He mentioned that the roads were there exclusively to transport the Moai, and some of the statues were dropped along the way for some reason. But in 2010, researchers found that the statues reached their final destinations because they were all set on hidden platforms. The road floor was U-shaped, so pulling massive statues along them wouldn't be easy. You can still find roughly 15 miles of these roads on the island, and see them from satellite images. Scientists used to believe that the Rapa Nui people made Easter Island unlivable and ruined their own civilization. But a new study that used remote sensing data and machine learning says that the island's population didn't grow too big and collapse. Instead, the islanders figured out how to live in this challenging place and kept their population small and steady for hundreds of years. Researchers found amazing rock gardens as proof for this new theory. Easter Island, or Rapa Nui, is one of the most remote places on Earth where people live. It's surrounded by the Pacific Ocean. Central Chile is 2,200 miles to the east of it, and French Polynesia is 2,600 miles to the west. The island, which is 63 square miles in size, is made entirely of volcanic rock. But the volcano stopped erupting a long time ago, so Rapa Nui's soil has lost most of the useful nutrients that lava once brought here. It's also drier than tropical islands, and its deep waters made fishing much harder for the settlers, as there's no shallow lagoons or reefs to fish in. So, the islanders came up with a smart farming method, called rock gardening, to survive here. They spread rocks of different sizes over the soil and planted crops like sweet potatoes and taro between the rocks. The rocks protected the plants from harsh winds and salty air, and helped regulate the soil's temperature. They also slowly released minerals into the soil, so it became healthier for growing food. Some islanders still use these gardens, although they don't produce a lot of food. People in places like New Zealand, the Canary Islands, and the U.S. Southwest have used similar techniques to grow crops in uneasy environments. While scientists are solving Easter Island mysteries, the island itself is teaching them something new about how the Earth's mantle works. For years, they thought it moved like a slow conveyor belt, carrying tectonic plates along with it. But a new study by geologists from Cuba, Colombia, and the Netherlands is challenging this idea. They used a special method called zircon dating to figure out the island's age. Zircons are tiny crystals that form when magma cools, and they have traces of uranium inside that turns into lead over time. So, the scientists measured this change to tell the age of zircons. And they were shocked when they saw that some zircons were way older than expected, around 165 million years old. The island itself is only 2.5 million years old. The scientists found that these ancient zircons came from deep inside the mantle, under the tectonic plate, by magma from earlier volcanic activity. Easter Island's volcanoes are part of a group called hotspot volcanoes, formed by hot plumes of rock rising from deep within the Earth. Normally, these plumes stay in one spot while the Earth's crust moves above them and creates a chain of islands, like Hawaii. But the discovery of ancient zircons on a younger island shows there's more going on deep underground than we thought. Research showed that 165 million years ago, a giant volcanic plateau existed where Easter Island is now. But 110 million years ago, it sank under Antarctica because of tectonic subduction. Ancient zircon minerals stayed put and didn't travel away with the mantle conveyor belt. So, it looks like the mantle near hotspot plumes doesn't flow as much as scientists used to think. It stays still. This new idea could lead to big changes in how we understand plate tectonics and how the Earth's inside moves over time. The Easter Island giant heads are so popular that they even have their own emoji. Their true meaning has been a mystery for hundreds of years. But it looks like we at least know how they were built and transported to their permanent location. The Moai statues consist of three parts. A large yellow body, a red hat or top knot, and white inset eyes with a coral iris. Around 1,000 of them were created. The main bodies of most of the statues were made out of volcanic tuff from a local quarry in what used to be a volcano. The material is easy to carve but not so easy to transport. That's probably why researchers found over 300 unfinished Moai back in the quarry. The rest of them stand in various locations facing the villages as if watching over the locals. So, it looks like the statues were carved lying on their backs. Then, their creators detached them from the rock, moved them down slope and set them in a vertical position to finish the work. Once it was done, it was time to get the statue to its platform. Now, if you've ever moved houses, you know how physically hard it is. So, imagine having to move a statue that is about half as heavy as a house without a car or any modern equipment for a distance of three miles. The locals must have invented some original way of doing it and scientists tried to recreate it to guess what it was. They tried pulling Moai replicas on wooden sleds. They thought someone could have used palm trees for that purpose but this theory has been debunked. The most successful experiment so far was wielding ropes to rock the statue down the road in a standing position. This method sounds real because the local Rapa Noai legends mentioned that the Moai walked from the quarry and of course they needed a good road to get there. In the early 20th century, researcher Catherine Rutledge identified an 800-year-old road network on the island. It was a bunch of pathways around 15 feet wide going from the quarry. She thought that those roads were ceremonial and not built just for the statues. She wasn't a famous scientist back then so others mostly ignored the theory. Several decades later, famous Norwegian adventurer and archaeologist Thor Heyerdahl published his theory. He mentioned that the roads were built exclusively to transport the Moai and some of the statues were dropped along the roads for some reason. But in 2010, researchers found that the statues weren't randomly dropped. They actually reached their final destinations as they were all set on hidden platforms. Plus, the road floor was u-shaped so pulling massive statues along them wouldn't be easy. You can still find roughly 15.5 miles of these roads on the island and see them from satellite images. And it looks like Catherine Rutledge was right about them. The roads were probably built for pilgrims to a sacred volcano and the Moai standing by them were sort of signposts. Halfway across the world in southern England lies another mystery made of stone. A massive sound illusion, a symbol of unity, a burial ground or more. Scientists are still debating the purpose of Stonehenge. It took Neolithic builders around 1500 years to construct this beauty made of roughly 100 stones standing upright in a circle. Millions of tourists come to see it every year and heritage protectors were worried about the modern road snaking close to the landmark. That modern road is now sunk into the ground below the grass level. And even though archaeologists assumed they could find an older road under it, they didn't have any high hopes. But when they took off a layer of asphalt, they noticed two parallel ditches that were nearly perpendicular to the road. The ditches connected the shortened sections of the avenue. That's what the archaeologists call the ancient pathway leading up to Stonehenge. It proves that the ancient people used to visit the monument for their purposes and probably some ceremonies. Another interesting find during a dry summer was three dry patch marks within the stone circle. It looks like they were left there by three massive boulders. So Stonehenge could have been a full circle once. In 2021, archaeologists found a Roman road submerged in the Venetian lagoon. The fact that it runs there on the bottom for nearly 4,000 feet is proof that the Romans were here before sea levels rose and flooded the area. It supports the theory that there was an important settlement here centuries before Venice was founded at the spot in the 5th century CE. The ancient Romans were great at many things and one of them was building roads. And it looks like they weren't afraid to work on the trickiest terrain. Scans have shown that the ancient road was built right on the beach and it requires some serious skills. Imagine a village from over a thousand years ago frozen in time. They're still half-eaten food on the tables and personal things left in a rush. It's all preserved so well because it's covered by volcanic ash. Researchers found this village in 2011 in modern-day El Salvador. They believe there was a mass celebration in a Maya village called Seren over 1,400 years ago. The whole village was there preparing the main temple for a ritual when a nearby volcano erupted. The 200 plus residents had no time to rush back to their homes. To save their lives, they had to flee the plaza and run south on a raised road called Sacbe. They managed to escape from the plumes of volcanic ash. In addition to being a superhero and saving all the people, the road had another cool feature. All Sacbe roads had an outer layer of stones, but this one was made of ash. Ironic, isn't it? It proves that the Maya people didn't only use stones to build their roads. Archaeologists discovered several coins in Jerusalem when they were excavating an old street. When they saw the minting dates, they realized the road was built when Pontius Pilate was the Roman governor of Judea. Since he was the local ruler, it's almost clear that he gave the order to build the road. The pilgrims most likely used this road to reach the temple mount for worship. The pathway, which was laid with over 10,000 tons of limestone, was almost as broad as a London bus is long. It had been there for 2,000 years. It's not common that you find such a luxurious road, and it's not clear why a Roman governor would spend so much money on the road. It was probably his attempt to make the city's population like him. Plus, it was a great way to show he had both money and influence. The Old North Trail is an ancient highway that the inhabitants of North America used for 10,000 years, first on foot, then with dogs, and finally with horses. The first travelers moved around the continent down its paths for thousands of miles long before the first Europeans arrived, and even during the last ice age. They used it to carry trade goods, visit relatives, find a mate, or just explore. Researchers keep finding evidence that the stories and legends of the Blackfoot Indians about this trail are real. And it could be even the road that served one of the most massive human migrations. The people who crossed from Asia on the Bering Land Bridge about 15,000 years ago and settled in North America might have used the ice-free corridor along the Rockies, which later became a part of the trail. The Nakasendo Highway was built in the 17th century during the Edo period of Japanese history to link Kyoto and Tokyo. The 310-mile long road runs across mountain ranges and down onto the plain. It was one of the five main roads used by the feudal lords and their families to travel to the capital. There were 69 post stations on the route where travelers could stay overnight. The road was built for horses and pedestrians as the Japanese didn't use carts. You can still walk parts of the route. The Moai statues have been standing tall and proud for hundreds of years. Once, people put an enormous effort into carving these grand sculptures, and then they just suddenly stopped making them. But why? Let's figure out this mystery. Easter Island, located 2,500 miles east of Tahiti, has an area of 63 square miles. To this day, it's one of the most isolated islands in the world. Once, it was covered with forests filled with different trees and ferns. But when the first humans came to the island around 400 CE, the forest slowly began to disappear. And starting from 1250 CE, Moai statues began appearing all over the place. People made them from different types of rock, compressed volcanic ash, basalt, tracon, and red scoria. As it's a volcanic island, these were all the ingredients the creators of the statues had to use. And once the builders completed their work, they covered the statues with pumice. The faces of the statues are different, but they all have distinct expressions with heavy brows and large noses. Their arms are carved into the body. Some have hats on top of their heads. There are nearly 900 statues all over the island. They differ in size. The average height is 13 feet tall, and the largest ones reach 33 feet in height and weigh up to 82 tons. Because the statues have so many different faces, there are theories that they represent and honor ancestors, chiefs, and other important people who lived on the island. But without any clear evidence, it's almost impossible to figure out the true purpose of the Moai. Once, they stood beautifully along the coast, watching over people in settlements. And their backs faced toward the spirit world of the sea. When Europeans first discovered the Moai statues in the 1700s, many of them had already toppled over. And the construction of statues had stopped way earlier than that. Huge amounts of effort were put into making these things. Expert craftspeople spent a great deal of time slowly carving the statues with basic picks. A team of up to 6 people would work hard for an entire year to make just one statue. Then, they often had to transport it to its special place on the island, as far as 11 miles. With the help of carbon dating, experts have managed to figure out that the statues started to appear in 1250 CE. And then, suddenly, in 1500 CE or so, the process just stopped. The creators of the statues just left their stone chisels where they were last used. And only a quarter of all the statues were actually placed where they were supposed to be. Half of them still remained in the quarry, while others were left on the ground mid-transit. Something happened on the island, and it caused everyone to just lose interest in the statues. There are many theories around why it could happen, and they mostly relate to deforestation. Islanders may have used wood to move the statues across the island. They possibly did this with the help of sleds and ropes, or even used logs to roll the statues or canoes to float them. The wood started to deplete eventually. Trees on the island took very long to grow, and rats ate most seeds. People had many uses for wood, and they needed it not only for practical things, but also to create other statues. Another reason why the inhabitants of the island could've stopped building the statues might be that they were busy with other projects. Specialized rock gardens were becoming more common with a growing population. They were great for the soil, keeping it warm and fertilizing it at the same time. Islanders spent much time and effort making these rock gardens, and there simply wasn't enough time to focus on building and moving the statues. Another theory suggests that what people believed in changed over time. Supposedly, the islands once saw the statues as a connection to their ancestors. After some time, though, rituals depicting a show of strength and endurance became more widespread. And with these rituals, islanders started to carve images related to seabirds. Seabirds became the main animal on the island. People started to believe that their ancestors looked over them through birds instead of the statues, so there was no longer a reason to build the Moai. Anyway, these theories might be true. But the main problem was that the small island couldn't support a growing population. What was once a lush land covered in forests quickly became a barren landscape. For the first few centuries, people relied on forest resources, but agriculture became more important sometime after 1550 when forests disappeared. Tribes that once worked together to build the fantastic monoliths focused on competing against one another instead. During this struggle for land and resources, the Moai statues were toppled over, people wanted to reduce their significance. Over the following centuries, all the statues were pushed over, but not all of them deliberately. Many fell naturally after being neglected for so long. Some even ended up in the ocean waters surrounding the island. And there they sat for a while. But there was some good news for these statues. They were re-erected, providing a great experience for visitors from all over the world. If you make a journey all the way to this isolated island, the first question you'll probably ask will not be how the statues were made or how they were moved. It will be, how on Earth did anyone even make it here in the first place? It was one of the most amazing feats ever. The Polynesians sure did some pretty extraordinary things. From as early as 1500 BCE, these boat-faring people began to explore their world. They used the most advanced marine inventions of their time. They sailed across the ocean in catamarans and outrigger boats, starting in Southeast Asia and inhabiting many more places throughout the Pacific. They lived as far north as Hawaii in 900 BCE and all the way to the south in New Zealand by 1200 BCE. And the farthest journey to the east was, of course, Easter Island. In only a few hundred years, these early sailors inhabited an area of thousands of square miles. They simply memorized where they had already been and, this way, managed to navigate the ocean. They used a wide range of techniques. They watched the sun as it rose and set during the day. Stars helped them at night. If it was overcast and sailors couldn't figure out direction visually, they used other brilliant methods. They watched the movements of ocean currents and wave patterns and paid attention to bioluminescence in the water. These patterns helped them find where specific islands were located. These seafarers even understood how islands and atolls in the distance caused air and sea interference patterns. Birds provided them with certain signs too. Some of them migrated long distances from one island to another, which gave travelers some kind of a visual connection for their route. Other types of birds had specific feeding times. Sailors knew when and where they hunted and directed their boats depending on where these birds fed. Vikings certainly get way too much credit for their seafaring abilities. Where they used a sun compass, the early Polynesians relied purely on the knowledge of how nature itself could guide them. Their skills were so advanced that in 1769, Captain James Cook, an English explorer, even hired a Polynesian navigator because of his extensive knowledge of the seas. But even more surprising was the fact that he drew a map from memory. It covered an area that was 2,000 miles wide. In this region, there were 130 islands, and the navigator knew 74 of those islands by name. At the beginning of their voyage, Captain Cook often disregarded the navigator's advice. But toward the end of their journey, he was very impressed. He also recognized the Polynesians as possibly the most widespread nation on Earth. Welcome to Rapa Nui, better known as Easter Island. It's a tiny speck in the vast Pacific Ocean, 2,200 miles away from the coast of Chile. This island is most famous for its eerie Moai statues. This place is also home to one of the most mysterious writing systems in the world, called Rongoronga. We found it on 27 small wooden tablets. For years, historians have been arguing about the true history of these tablets. And now, we might have found the truth. Humans first set foot on this island in the 12th century. For many years, it was home to the Rapa Nui people. They were pretty isolated out there in the Pacific Ocean until Europeans arrived in the 1720s. Europeans brought with them lots of troubles, leaving only a small fraction of the native population alive. Later in the 19th century, a missionary, Eugene Iroh, went to the island and discovered the wooden tablets with intricate symbols carved on them. He wrote how marvelous they are. But there are hundreds of them on the island, and that they can be found in every household. But unfortunately, not all of them survive to this day. We've only got 27 of them. Some of them were heavily weathered, burned, or otherwise damaged. And now, they're scattered all over the world in museums and private collections. Some of the language's artifacts were carted off to Tahiti and then to Europe by Europeans, leaving none behind on Easter Island itself. The four sacred tablets found their home in a congregation in Rome. They were the ones used in the recent discovery. For years, historians have been arguing whether this writing system was made up by the islanders themselves, or they borrowed it from Europeans. To find the truth, they decided to use a technique called radiocarbon dating. All organic materials, like wood, charcoal, and so on, contain a tiny amount of a radioactive form of carbon called carbon-14. When life comes to an end, things stop taking in carbon-14, and the amount they had starts to decay over time. By measuring how much carbon-14 is left in a sample, we can assume how old this sample is. This is how we learn the age of many fossils and artifacts. So, they looked at the age of some Ranga Ranga tablets. Three of them were crafted from trees grown in the 18th or 19th century, which aligns with the arrival of Europeans. However, one of them is older than the Europeans' first visit to the island. There are two reasons to believe that Rapa Nui people created this writing system themselves. First, Ranga Ranga works differently from European languages. Decoding it is a pretty hard task. Unlike English, this language boasts over 400 unique glyphs, none of which resemble any known writing system. There were many attempts to decipher this language, and none of them were successful so far. And second, one of the tablets is shown to be from around the 15th century, before the Europeans arrived. The problem is that radiocarbon dating can only tell us when the wood the tablet was made from was cut down, not when the writing was put on it. And since we've only got one tablet to go by, this isn't enough to be completely sure. On the other hand, why and where would they preserve cut wood for over 200 years just to grab it and write something on it one day? But anthropologists and historians say that it's possible. Scarce wood resources might have led the islanders to reuse old driftwood, which could be centuries older than the writing itself. This is known as the old wood problem in archaeology. Plus, the tablet looks very preserved. It was maintained to protect it from wood-damaging insects, humidity, and so on. That's why it survived over the centuries. Whatever is written on it, it was probably important for the Rapa Nui people. Now, all of these are guesses and clues, but scientists are cautiously optimistic. They believe that Ranga Ranga could be one of the rare instances of independent writing invention, like those of the Sumerians or the Egyptians. But we need more evidence. In the Rapa Nui language, rogo rogo means to recite or to declaim. Not everyone could write, only a select few. Probably only the elite of Easter Island, mostly men, knew and could read this written language. After colonization, none of them survived. So now we have to rack our brains trying to figure out what's written here. First, scholars can't agree on what type of script it is. We aren't even sure that this was their language. But even if it was, we don't know whether it's a primitive form of writing or a fully developed system. In the 1990s, a linguist, Stephen Roger Fisher, believed he might have cracked the code of Ranga Ranga's structure. His idea was that these tablets conveyed cosmogonies. Cosmogonies are stories or narratives that explain how the universe was created and how natural phenomena came to be. They often come from ancient traditions and cultures, like those found in East Polynesia. The tablets could have talked about things like how the world began, where everything came from, and how different aspects of nature, like the stars or the mountains, were formed. This would also explain why only the wise elite could write. Fisher thought that Ranga Ranga is a mix of logographic and semasiographic systems, which means that some symbols represent spoken words while others represent ideas or concepts. But deciphering them would be very hard because it requires extensive memory and knowing context because the symbols are more like hints than complete expressions. However, other language experts disagreed with his ideas, saying there were problems with how he put together his theory. Unfortunately, Fisher couldn't prove this hypothesis. Maybe these are just drawings. If we look at the tablets, there are some things that look recognizable. People, animals, plants, and geometric shapes. There are some birds. One of them looks like a frigate bird, which Rapa Nui people associate with the deity Maki Maki. There are also fish, centipedes, and so on. Or at least these glyphs look like them. Could it be just art or a form of decoration? Maybe, but there are some problems. The glyphs show a high degree of complexity and structure. They also keep the same style. For example, there are several symbols that show something human-like with a raised hand. The only difference is different heads. As if it wasn't complicated enough, this unique writing style also uses a system known as reverse ostrophedon. This means that each alternate line is flipped upside down, resembling nothing seen elsewhere. We don't know why they would turn the tablet upside down after each line. But all this shows that they had some sort of system and organization behind these symbols. Plus, it seems like they use these tablets every day for some practical purpose. But there's some hope for the future. New technology, like AI and other computer programs, might help us understand lost languages. We already started creating algorithms that could help us solve other mysteries, like the Voynich manuscript. Academics even organized the Vesuvius Challenge, a machine learning competition that, in 2023, cracked the riddle of the ancient Herculaneum scrolls. The scrolls were buried under volcanic mud after the catastrophic eruption of Mount Vesuvius in 79 AD. In real life, the scrolls are very fragile, so deciphering them would be a very hard task. But with digital scanning and machine learning, it's much easier. They have a rich history. They most likely belong to the personal library of an Epicurean philosopher named Philodemus. These scrolls contain very important insights into Greek philosophy and Latin literature. If we decipher more of them, we'll learn more about the rich history of the Roman Empire. Waves are crashing higher than ever before, about to swallow one of the world's most mysterious islands. By 2080, rising seas could crash all the way up to Ahu Tongariki. It's the famous ceremonial platform on Rapa Nui, aka Easter Island. Unfortunately, that's not just a guess. Researchers at the University of Hawaii at Manoa have already run the numbers and shared their findings in the Journal of Cultural Heritage. Their study shows that up to 51 other cultural landmarks, including the iconic Moai statues, could face flooding. But before we get to all that drama, let's learn more about Rapa Nui itself. This is the original name of Easter Island. People from Polynesia settled there way back, around 300 CE. Once they made themselves comfortable, they started creating their own wild and creative culture. Between the 10th and 16th centuries, they built massive ceremonial platforms called ahu and huge statues called moa, made to honor ancestors. Those giant figures still stand today, giving the island a mysterious vibe. Rapa Nui National Park protects all this. It's a Chilean wildlife area, the heart of Rapa Nui culture. The architecture and sculptures here are totally unique, even compared to other Polynesian islands. Easter Island is super remote, literally the farthest inhabited island in the world, sitting 2,300 miles from mainland Chile. The island covers 64 square miles and the World Heritage Site takes up about 27 square miles, including four tiny nearby islands. Rapa Nui National Park is full of archaeological treasures. Experts estimate there are about 900 moai, more than 300 ahu, and thousands of other structures for farming, funerals, houses, and daily life. The moai are incredible. Some stand 6.5 feet tall, others reach almost 66 feet. Most were carved from yellow-brown lava using simple basalt tools called toki. Some moai were still being carved, some were being moved to their final ahu, and some were torn down and re-erected. The quarries, like Rano Raraku, show us today how the carvings were made. The ahu come in all shapes and sizes. The biggest is Ahu Tangariki, with 15 moai lined up on top of it. Most ahu have a raised platform of carefully worked stones, a ramp, often paved with smooth beach pebbles, and a flat area in front. Rock art is everywhere. You can find pictographs and petroglyphs in all kinds of styles. Caves hide even more carvings. Even villages, farms, and other structures are super interesting. By the 16th century, according to studies, the Rapa Nui society faced a big crisis. Natural resources ran low. The culture started to change. Many of the megalithic monuments were ruined. The ancestor cult was replaced by the man-bird cult. It was centered in Orongo by the Rano Kau volcano. There are 54 semi-underground stone houses there, all shaped like ellipses and decorated with carvings about birds and fertility. This cult lasted until the mid-19th century. It's probably no wonder that colonization brought huge changes. Livestock, forest relocation, and diseases cut the native population to barely over a hundred people. Today, the island is home to descendants of the original Rapa Nui people, as well as immigrants. They try to keep the culture and still live in the modern world. Sadly, all that heritage might be lost soon, for good. And if nothing is done, rising seas could put Rapa Nui's UNESCO World Heritage status at risk. Scientists say that knowing these risks are just the first step. If we actually realize what's happening, we can figure out how to protect ancient monuments. The team wanted to see just how bad rising seas could get for Rapa Nui. So they built a digital twin of the island and ran insanely detailed computer models to track waves along the shore. Then they stacked those flood maps on top of data about all the cultural landmarks which they got thanks to local partners. They wanted to see which ones would get hit first. The results were pretty intense. Sea level rise is threatening coastlines everywhere, but the question now is when and how bad. The researchers' timeline shows that waves could crash all the way to Ahutanga Riki by 2080. That's the famous platform with the Moai statues, the heart of the island's culture. The data is clear and the clock is ticking. The island's people need to start planning now before the sea starts taking what's theirs. And Easter Island isn't the only potential disaster site suffering from the elements. The old city of Chanchan in Peru is feeling the heat from extreme weather. It used to be the capital of the Chimu Empire and is basically the biggest pre-Columbian city made out of earth in the Americas. The place was super advanced for its time. They had smart city planning, organized society, irrigation systems, and some amazing art. The Incas took over in the 1400s, but the ruins still show how sophisticated the Chimu were. It's now a UNESCO World Heritage Site, and it's really important. And now, El Niño. The warm phase of a natural climate cycle called El Niño-Southern Oscillation brings both heavy rains and long droughts to this place. These ups and downs have happened forever, but now they occur more often. Besides, rising groundwater is making the buildings unstable. To fight this, people are controlling the water table, fixing walls, documenting the architecture, training locals, raising awareness, and making disaster plans. Storms and shrinking sea areas are also causing problems for the 19th century whaler settlement on Herschel Island in Canada. It's so bad that buildings had to be moved inland to stay dry and avoid flooding. If erosion keeps going, locals might have to move them even more, and some structures are likely to be abandoned. Permafrost is also breaking down graves, which makes buried caskets topple and break. If we move to the mosque city of Bhagarat in Bangladesh, we'll find that water and salty soil are wrecking stone buildings. Salt gets into the rocks and then expands when it gets wet. This causes the stones to crack and crumble faster. And this place is a UNESCO World Heritage Site too. It contains 360 mosques, public buildings, water tanks, mausoleums, bridges, roads, and other public buildings. People once constructed them from baked brick. Another place potentially in danger from rising seas and stronger waves is coastal Great Britain. There, weather conditions are threatening lots of historic castles. Hearst Castle in Hampshire, Tintagel in Cornwall, Peel Castle in Cumbria, Baird's Cove Fort in Devon, Garrison Walls in the Isle of Skilly, and Kelshaw Castle in Southampton all face danger. English Heritage says they need to fix walls and build stronger defences to stop storm damage. Heavy rains and extreme weather are also hitting Edinburgh in Scotland. Flooding and landslides are a serious growing risk. Since 1970, annual rainfall has gone up 13%. The sandstone repeatedly gets wet and dries, which wears down Edinburgh Castle and erodes the volcanic rock it stands on. Is it going to topple one day? If nothing is done soon, time will show, I guess. Another super famous and touristy place that might get flooded soon is Venice in Italy. Its lagoon faces a serious threat from rising sea levels. Flooding is becoming more and more common. This puts the city's buildings and streets at risk. So, as you see, the problem of Rapa Nui aren't unique. Other coastal places like Hawaii face the same threat from rising seas. Ancient temples, sacred burial grounds, and other irreplaceable cultural sites are at risk, just like the moai and ceremonial platforms of Easter Island. The rising waters don't just threaten buildings, they put the history, traditions, and identity of entire communities in danger. Researchers are using data on coastal flooding to predict what could happen to Rapa Nui and other historical spots. They're mapping the risks, studying how seas will rise, and searching for ways to protect those precious places. The clock is ticking, and without action, some of the most sacred and ancient sites could be lost forever. For centuries, the whole world was wondering how the giants of Easter Island moved around. Maybe powerful chiefs ordered big groups of workers to haul them, or the elite controlled special statue-making quarries. But now we finally know the people of Rapa Nui didn't drag their moai statues into place like lifeless logs. They made them walk. Scientists looked at nearly a thousand moai, checked their shapes, proportions, wear patterns, and the gentle forward lean and curved base that many statues have, and then it struck them. Those details weren't accidents, but engineering. The forward lean shifts the center of gravity, and the curved base lets the statue pivot like a pendulum. Once the motion starts, inertia helps carry each step. Think of it like walking an enormous stone toddler using ropes and balance. To prove this right, the research team built a 4.35 ton replica. The real statues were around 13 tons, and some weighed up to 80 tons. With 18 people on the ropes, they walked this statue about 300 feet, about the length of a football field, in 40 minutes. That's faster and easier than dragging something flat across logs or rollers. The old roads of Rapa Nui also helped the process. They're about 14 feet wide, and the way they curve inward makes them perfect to keep a statue steady while it walks forward. Every time the islanders moved a moai, they weren't just walking it, but they were literally shaping the road as part of the job. When you look at the island's landscape today, you can actually see these paths crisscrossing each other, sometimes running side by side like alternate routes. The ancient workers were likely clearing a stretch of ground, moving the statue a bit, clearing a bit more, then rocking it forward again in a specific rhythm. It looks like they spent just as much time prepping the road as they did moving the statue itself. So the ancient Rapa Nui didn't need thousands of workers or modern machinery, and it all worked with just ingenuity, rhythm, teamwork, and clever design. The transportation wasn't the only moai mystery. People knew the statues were meant to honor important chiefs, but no one could explain why the ancient islanders picked those exact spots for them. Most of the moai sit right along the coastline, almost like they're guarding the island. So a team of scientists took a closer look at those locations, and the answer turned out to be all about water. Easter Island's volcanic soil is super porous, which means it soaks up rainfall quickly. Because of that, there weren't enough rivers or streams, and the island ended up with very limited fresh water. Hundreds of years ago, the people survived thanks to groundwater discharge. Basically, water stored deep underground in layers of rock or soil, called aquifers, eventually rises up to the surface on its own. When that water bubbled up near the coast, it mixed with seawater, but the mix stayed fresh enough to drink. The locals collected it right from those coastal spots, and that's exactly where they built the moai. They weren't just decorating the coastline, they were marking the island's most essential source of fresh water. Now, most of the moai bodies were made from volcanic tuff, a soft, easily carved stone, and most of the statues were carved in one quarry inside an ancient volcano. In October 2023, a wildfire tore through the quarry, and everyone who cares about Rapa Nui got really concerned about whether the site would survive future disasters. So when a team of scientists arrived in January the following year, a local community group asked if they could document the quarry, just in case another fire damaged it for good. The geographers jumped at the chance and launched about 30 drone flights over the quarry. Flight after flight, they collected an incredible 22,000 photos. After that, they spent months running those images through computer software that stitched every piece together into a single, hyper-detailed 3D model. Now anyone in the world can explore Ranu Raraku, one of Easter Island's most important quarries, without even setting foot on the island. Of course, the 3D model isn't just an online tour platform. The team noticed that there were several workshops inside the quarry, and carving techniques changed from one site to another. So there wasn't one chief who told them how to do it, but rather, each spot worked like its own workshop that was tied to a specific family clan. This could also be another proof that the Moai could move with far fewer people than anyone once believed, probably around 20 to 50. That's roughly the size of an extended family or small lineage group on Easter Island. Most statues were carved while lying on their backs, from the top down. In the most common method, the carvers focused on the face first, shaping the eyes, nose, and mouth, and then carved the outline of the head and body around those features. The second method flipped that order. They carved the entire block into the basic shape of a Moai first and didn't add any details until later. And in a few rare cases, the carvers went at the stone from the side and worked straight into a nearly vertical cliff, which must have taken some great skill. And just when researchers mapped over a thousand Moai and thought they knew them all, the island threw them a curveball. In the middle of a dried-up lakebed, a place no one expected anything, another statue appeared in 2025. It was the first statue found in a lakebed before, and it might not be the last. For at least two or three hundred years, the laguna was almost ten feet deep, so it would be impossible for humans to build or put a statue on the bottom. Scientists think the Moai are over 500 years old. It's possible that the Rapa Nui people who built them probably brought the statue here when the lake was dry in the past. The new find turned out to be slightly over five feet tall, which is smaller than the other statues on the island. As the region continues to dry out, the lakebed has started revealing what it's been hiding for who knows how long. More statues could be tucked under those thick reeds that grew over the lake for centuries. Now that the water has receded, scientists might be able to use ground-sensing tools to detect what's buried beneath the surface. While researchers keep studying the statues and solving their mysteries, nature is playing against them. A new study shows that by 2080, seasonal waves could push far enough inland to hit some of Easter Island's massive Moai statues. These stone giants have stood through everything. Harsh sun, relentless wind, pounding rain, lichens slowly creeping across their surfaces, and even wildfires. But rising sea levels already threaten the island's coast, and the Moai now face a danger bigger than anything they've endured before. Researchers built a super detailed digital model, a digital twin of a bay on the island's southeast coast. They ran a bunch of simulations to see how different sea level rise scenarios would change the way waves move through the bay. The results of these simulations showed that waves could start reaching the site's 15 Moai by 2080, and then of the most recognizable and photographed statues on the island, could end up flooded. This spot sits on a big ceremonial platform and draws more visitors than almost any other Moai spot on Rapa Nui. And the danger doesn't stop there. Dozens of other important cultural features nearby are also in danger. Ancient dwellings, petroglyphs carved into stone, burial sites, old rock gardens, basically the entire physical memory of Rapa Nui's cultural history. If the island doesn't manage these risks, it could even lose its UNESCO World Heritage status. Now that researchers understand the threat more clearly, they want to use this knowledge to help protect the island. Scientists hope to collaborate closely with local communities to safeguard Rapa Nui's cultural heritage for future generations. That's it for today. So hey, if you pacified your curiosity, then give the video a like and share it with your friends. Or if you want more, just click on these videos and stay on the bright side.