Leo Dickinson is unique, both as a film-maker and in his pursuit of not just one but a whole range of high-risk adventure sports. He filmed Messner on Everest, Julian Nott's balloon altitude record and some of the largest formation skydives yet achieved. With over thirty international awards to his credit, he recorded these and other historic 'firsts' in a visually spectacular book, Filming the Impossible. Since then, neither Leo's output nor his intrepid disregard for danger has diminished. If no longer dazzled by the 'star' performances of Olympian record-breakers, he has found a delectable freedom in the sheer fun of life at the very edge of the impossible. He overcame acute claustrophobia and took to underwater cave exploration - first in the forbidding waters of the Wookey Hole complex, and then in the awesome Wakulla Springs of Florida, where he filmed pre-Ice Age mastodon bones and his companions achieved a record depth using new rebreathing apparatus. This book also recounts a hilarious balloon flight over the Himalayas and the making of his miost ambitious film - a history of the Eiger. Leo recalls the unforgettable Don Whillans, a moving encounter with the veteran climbers Heckmair and Harrer, and revels in the company of many other great characters who, without seeking headlines, are devoted to the maxim of all dangerous sports - anything is possible.