The Huautla Caves system in Mexico has long been the Holy Grail of cavers. Fighting floods, cave-ins & Mazatec Indians who believe the caves are holy, caving teams have competed every year to be the first to prove the cave's depth. No-one has gone further than Bill Stone, the world's foremost caver, whose 20-year obsession nearly ended in disaster. He first explored Huautla in 1976 during the frontier days of caving. Over the next 15 years he stayed at the top, inventing clothing & equipment to help in his obsession. Finally, in 1994, after years of preparation, Stone & his 44-member team entered the Sotano de San Augustin sinkhole at Huautla. It was the beginning of a journey that would untimately claim the life of one diver & force every member of the team back
- except Bill Stone & team member Barbara am Ende, who forged on alone, with no hope of rescue, to set the record for the deepest cave dive in the Western Hemisphere.