I've just added the fantastic Pech Merle and encountered a small issue. The closest Site Types seem to be:
- Cave / Rock Shelter
- Cup and Ring Marks / Rock Art

But Paleolithic Cave Art isn't really suitable in either category...

edit.

There are some photos here:

http://www.quercy.net/pechmerle/images/imgN_600.jpg - Horse, 25k BP
http://www.quercy.net/pechmerle/images/IMG0043_600.jpg - Bison, 20k BP