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uksub.com
A photographic documentation of subterranean locations and places worthy of exploration in the UK, with an emphasis on the south west of England.
http://www.uksub.com
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| Travel Details & Reviews
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Undercity.org
Steve Duncan's site features photography of underground or unknown sites in New York. Contains stories, research, tips and tricks.
http://www.undercity.org/
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| Travel Details & Reviews
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