Cerberus Spelaeological Society My own club ( I was Chairman in my young and foolish days ) with a hut on East Mendip, near Bath, , South West UK
Le Lapiaz A little place we rather like in the Vercours, France
French Caving - check out the image collection
Latest discovery of Cave Paintings at Vallon Pont d'Arc
National Speleological Association, USA
US Show Caves ( yep, all of 'em )
Sherry Mayo's Caving Website, Australia
alt.caving
discussion group (mainly US)