The Dropa Stones were first discovered in 1938, when a archaeological expedition led by Chi Pu Tei, stumbled across a cave high in the mountains that border China and Tibet
It was obvious to the archaeologists that the cave had been .
Underwater alien bases
Underwater alien bases have been explored relatively to a good extent, though their popularity has been relatively lower, and the subject has been seen as a less important facet of UFO exploration. This is because no hard evidence .