I watched Gavin Newman's excellent 2005 film Wookey Exposed this week. It's a superb, shall we say, exposé, of cave-diving in the context of the place where the sport had its beginnings - Wookey Hole cave in Somerset. There's a real element of insanity with the whole cave-diving thing, but the footage captured from the furthest points of the the cave's exploration is just superb and very engrossing to watch. Leo Dickinson's 1985 film Nosey Parker is included on the DVD, and that chronicles the late Rob Parker's record-breaking push into Wookey back in the 80s using the still experimental tri-mix breathing systems. Leo Dickinson has produced some marvellous aerial films about skydiving and his impressions of cave-diving as being many magnitudes more dangerous than jumping from a plane are quite insightful.