Grottes et karsts de Chine
Sur les traces de Xu Xiake

Located near the Qiankou Tiankeng viewing platform.

Entrance is 3m wide, 2m high trends downward in a climbing/walking vadose canyon passage with a roof tube. The roof tube swings sharp right after ~15m and the vadose passage continues straight. The roof tube is walking passage with a series of climbs. It was followed to a climb up [QM B]; here a small stream of enters from above and flows down a meandering narrow passage to where is splits. The stream goes down a crawl [QM C] and there is a dry crawl to the left which goes 30m to a T-junction with a larger passage. Left goes back to the entrance, closing the loop with the initial junction. Right is a vadose stream passage with jutting beds which goes to a 6m pitch. Below the pitch the vadose passage continues. The stream goes down a crawl [QM C]. Straight ahead goes around a popcorn-encrusted corner to a 5m crawl, emerging into a small chamber descending to a mud choke. Doubling back almost underneath the crawl is a short crawl to a climb up into a 15m-wide passage. Left is a boulder pile with a possible way down at the foot of the boulder pile. A passage low down follows the right hand wall, no draught [QM B]. Ascending the boulder pile there is a continuing passage with a draught [QM A] and a ~20m pitch to the left [QM A]. Right in the big passage goes 60m to a complicated junction where the high canyon is choked with breakdown. At the bottom of the room the stream cuts under the wall in 0.5m tall, 2m wide passage continuing 30m to a 12m pitch into 4m-wide 30m? high passage [QM A].