Grottes et karsts de Chine
Sur les traces de Xu Xiake

300m north of Ma Wan Dong in the Er Wang Dong valley. The entrance is on the west side of the valley, a short way south of an aquaduct across the valley. Best path to the entrance is along the S side of the rice paddies, then follow a steep path up the vegetation.

15m wide, 4m high vegetated entrance opens onto 30m wide chamber with formations on the left. To the left a ramp slopes up steeply to hading passage which ends after 80m at a small second entrance from which the Ma Wan Dong entrance is visible. Most of the draught in the cave is a through draught from this entrance to thea lower, main entrance.

From the chamber, turn right going past a few pools to a complicated section of large block breakdown with the slanting dip of the beds very evident in the slope of the ceiling. To the N the breakdown leads to 80m of flat mud floored walking passage that pinches out. To the S there is a route down through boulders to Pitch Passage, which descends past muddy flowstone, a nitrate pit, and two large boulders to a cross-rift where the ceiling is significantly higher and a pitch down is met. The pitch descends to a 40m long, 10m wide chamber which slopes up over slippy mud to a boulder choke.

To the SE in the breakdown area, a 3m wide flat floored triangular shaped passage heads S. On the right a side passage slopes down, connecting to Pitch Passage. Further on another passage on the right goes to a blind chamber. The passage terminates at the head of a pitch which presumably connects into Pitch Passage.

A dozen medium-sized brown bats were seen roosting in the entrance. There were white cave crickets throughout the cave.