Tuesday, June 2, 2009
7 Underground Wonders of the World
Labyrinths, Crypts, Catacombs and More What motivates humankind to burrow deep into the Earth? From London to Paris, Budapest to Moscow, the USA to Australia, here are seven of the most amazing examples in the world. Some were built for military defense or shelter, many are abandoned while others thrive. These amazing images feature tunnels,
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