Show Caves of the World Save
Extensive details on worldwide showcaves that can be searched by clicking on the relevant section of the world map.
http://www.showcaves.com/   

International Show Caves Association Save
A worldwide list of show caves caves or caverns of tourist interest.
http://www.i-s-c-a.com/   

Forum - Usenet alt.caving
Forum - Usenet uk.rec.caving - Google Groups
Forum - Usenet uk.rec.subterranea

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