Adventure sport film-maker Leo Dickinson, author of "Filming the Impossible", documents his latest experiences with high-risk sports. These include underwater cave exploration - first in the Wookey Hole complex and then in the Wakulla springs of Florida, where he filmed pre-Ice Age mastodon bones and where a record depth was achieved using new re-breathing apparatus. The book also recounts the balloon flight over the Himalayas and the making of his film - a history of the Eiger. Leo recalls his meeting with Don Whillans and with the climbers Heckmair and Harrer as well as his involvement with other sports such as white-water canoeing and night-time parachute stacking.
