Saudi Arabia Hid This in the Desert for 40 Years! 😱 | Uncovering a Mysterious Secret

Until recently, fewer than a thousand foreigners a year came to this valley in north-western Arabia — and each of them needed a special permit. And yet here, among blazing red rocks, stand stone façades as tall as a seven-storey building, a labyrinth of 900 mud-brick houses and mysterious structures older than the Egyptian pyramids. This is AlUla — a place that Saudi Arabia kept closed for centuries.