Chilling Facts About The World’s Most Mysterious Ancient Cities

The Bunker

The subterranean French city of Naours was built to provide refuge from invasion and enemy attack. The city’s 300 rooms, connected by 200 miles of tunnels, provided ample hiding space for besieged medieval villagers. The city lay forgotten for hundreds of years before reprising its military role during the First World War, when Allied soldiers recovered there following the Battle of the Somme.

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