In reply to Cara8712:
Join a caving club. In almost every caving club a *lot* of the members climb as well, many clubs have regular official climbing/bouldering meets (as well as climbing with club members), so consider that a kind of buy-one-get-one-free deal.
Not sure where you are exactly but try contacting these people and saying you want both caving and climbing
South Wales Caving Club. 1-10 Powell St, Penwyllt, Pen-y-Cae, Swansea SA9 1GQ. www.swcc.org.uk
Chelsea Spelaelogical Society (ignore the name Chelsea, loads of their members live locally to head of the valleys and S Wales). Whitewalls, Hafod Road, Near Llangattock, NP8 1LG. www.chelseaspelaeo.org.uk/