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7 (More!) Underground Wonders of the World [+PICS]
99 Added: Aug 14th 2008
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Humans burrow into the Earth out of anything from necessity to superstition, driven by coincidence or coerced by circumstance. From subterranean cities to hobbit holes, here are some of the most amazing examples of historic human efforts under the planet's surface. Visit Link » |
![7 (More!) Underground Wonders of the World [+PICS]](http://www.g-fun.com/content/links/2008/08/14/1218697216.jpg "7 (More!) Underground Wonders of the World [+PICS]")
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