One place for someone to go i to Dukes cave 12/13th september. No vertical expertise required. Dukes is a limited access cave and numbers on a trip are restricted. This trip is to dive the upstream sump and 3 places are already taken by the dive team. I am leading and this leave just one place left. I will favour those that have not had the opportunity to visit the cave before and those that have may have missed out on previous trips. Let me know if you are interested.