The entrance, 2 x 1 metres, gives access to a first drop of 4 metres that leads to a ledge; from there, the pit continues through a narrow shaft 0.60 metres wide and 4 deep. At 5 metres from the ground and in a SW direction there is an ascending gallery of 6 metres. Once we have reached the bottom of the shaft, the cavity continues through a gallery in a SW direction which, after passing a first narrow passage, leads to a chamber 1.60 metres high; in the same direction and after forcing a passage, the gallery continues for a few metres until it becomes impassable.

Cavity structured on a N45E – S45O joint. The corrosive and erosion forms are notable.

The gallery that precedes the shaft forms a water conduit that in times of heavy rain acts as a small subterranean river.