15 Ancient Discoveries That Science So Far CANNOT Explain

Science has solved mysteries that once seemed impossible, but there are some ancient discoveries that continue to raise questions with no simple answer.

From alleged metallic tubes buried in Cretaceous rock and a wheel-like imprint photographed deep inside a coal mine to Egypt’s mysterious Ankh and 300,000-year-old footprints at Schöningen, every discovery carries a puzzle of its own
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