Scientists Unlocked a Metal Gate That Revealed the Oldest Cave Carved Into Rock!

Although the Barabar Caves in India are among the oldest man-made caves in the world, their design is reminiscent of an almost futuristic spaceship! The incredibly smooth walls of these rock formations even appear so alien to some observers that they can only explain their existence through the use of lost advanced technology! But what are the facts about the history of the Barabar Caves? How did people in the 3rd century BC manage to change the hard granite rock at all, and for what purpose did they use this mystical place?