Notes

416 pages :
illustrations.
Summary: The Darkness Beckons charts the history and development of cave diving, from early underwater expeditions in France in the late nineteenth century, through to cutting-edge dives across the globe, where iron-willed individuals are pushing the limits of equipment and techniques in the pursuit of exploration. Cave diving is the natural evolution of caving, where cavers and open-water divers overcome the challenges of water-filled passages by using specialist breathing apparatus to explore further and deeper than ever before. The challenges are many - distance, depth, temperature, visibility, rockfall and simple restriction in passage size - together with the physical and mental demands placed on an individual in an environment where, despite meticulous preparation, equipment can malfunction and one cannot expect to be rescued if something goes wrong. Early cave dives were made using Standard Equipment diving suits, before 'frogman' equipment was adopted by British and Italian divers in the 1940s. Around the same time, Jacques-Yves Cousteau and Emile Gagnan designed the compressed-air aqualung, the first scuba equipment. (From Book Depository)