Do you mean Batcombe near Evercreech, or Batts Combe Quarry near Cheddar. If the former, dunno, but I'd probably ask Mrodoc on this forum; if the latter then check out the Mendip Cave registry & Archive.
Its batcombe near evercreech i have been searching around there and all i have found is an interesting sink and on the other side of the hill is the spot where i was digging but got told to stop1