Mount Everest Foundation
Supporting the exploratory

Caves of Thunder, Irian Jaya, Indonesia

This nine-member team which met with daunting administrative difficulties, achieved their objective of exploring and surveying 'the world's largest under- ground river' on their second visit. They accurately located the cave entrance by Global Positioning System and witnessed, at considerable risk, 'the third biggest chamber in the world fill to the roof in the most spectacular flood ever'.

July - September 1992
Steve Jones with Dave Checkley, Dave Gill, Kev Senior, John Wyeth, Colin Boothroyd, Gavin Newman, Adrian Gregory and Simon Willis