Massive Underground Tunnels Of Stone Age Stretch From Scotland To Turkey

There are thousands of underground tunnels across Europe, stretching from the north in Scotland leading all the way down to the Mediterranean. This 12,000-year-old massive underground network is very impressive. Some experts believe the network was a way of protecting man from predators.

Others suggest the linked tunnels were used as an ancient underground superhighway (like motorways are today), for people to travel safely regardless of wars, violence, or even weather above ground.

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