Region: China and Tibet

Ms Hilary Greaves with Andrew Atkinson, Rich Bayfield, Duncan Collis, Dr Simon Flower, Simon Froude, Rob Garrett, Rich Gerrish, Martin Hicks, Lius Hong, Chris Jewell, Martin Laverty, Martell Linsdell, Fleur Loveridge, Gavin Lowe, Lenik amak Saymo, Andy Sewell and Pete Talling.(July-August 2004)

This was a continuation of a programme of cave exploration in Yunnan Province already supported in 2002 & 2003 (MEF Refs 02/48 & 03/49) and an unsupported expedition earlier in 2004. On this trip, the team attempted to find entrances at over 4000m that might connect with resurgences in the Yangtze Valley 2000m lower down. The hope was that they might find a system deeper than the current world record of 1800m. They covered a large area and logged 240 new entrances at heights up to 4400m but were unable to achieve any significant depths.