Only one I have is Speleo Sportive en Ardeche by Philippe Drouin and Thierry Marchand by Edisud 1989 I guess it's out of print. Worth tracking down though, in French but there are pictures.
If you can take a dinghy and abseil off the middle of Pont d'Arc into the Ardeche River into the boat, it's great fun. Unfortunately only pics I have are on unscanned slides so can't post here.
R?seau Rochas Midroi Guigonne, Syst?me Goule-Event Foussoubie, Grotte de Ch?taigniers, are among the ones worth seeing. There's also one in Pont d'Arc behind a cafe, can't remember the name though.
Fantastic place.