Underwater potholer: a cave diver's memoirs

Duncan's curiosity has got him into a lot of tight spots - quite literally! As a teenager, Duncan really wanted to be an astronaut but took to the exploration of inner space instead. Only a dozen men might have stood on the moon but Duncan has squeezed into many places that no-one has ever been before, and some places that no-one is ever likely to go again (probably for a very good reason). These memoirs recount the author's misadventures during...