1M views · 14K reactions | Unsolved Mysteries is back on July 1 Fusing signature elements from the original series with contemporary immersive, character-driven storytelling, the new episodes offer clues and theories with the hope that one viewer holds the key to solving the mystery. | Netflix | Facebook

The summit of Mount Everest is made of marine limestone, meaning that the highest point on Earth was once the seafloor of an ancient ocean before being uplifted by tectonic forces over millions of years. | Unsolved Mysteries & Paranormal Activities