Archaeological Mystery: 10,000 or More Caves were Dug into the Himalayas Over 2,000 Years Ago

One of the world’s greatest archaeological mysteries is hidden in the Himalayas. 10,000 man-made caves have been tunneled through the rock from above or dug into the cliffside. Who built these ancient structures and why? Archaeologists from Nepal and the University of Cologne began exploring the caves situated 155ft. (47.24 meters) above ground in the mid-1990s. They found the remains of dozens of people who had lived 2000 or more years ago. Several other groups of researchers have followed in their footsteps since. Those who’ve seen the remote Upper Mustang…

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