A 4.5 x 4 metre entrance leads to a 7 metre shaft that leaves us on top of a debris cone. In a N direction we can follow a descending gallery 15 metres long, in which we will find, on its left side, a small gallery of 3 metres. At the end of the main gallery we can climb up some chimneys to some wings separated by bedrock.

Again at the base of the entrance shaft, one can follow in a S direction along a pronounced ramp that leads to a hole 0.8 metres high and about 3 metres long that opens into a room with a steep slope and which is 13 metres long, 3 wide and about 10 high. At the lower end we find a crawlway, above which an important hole, empty in some places, forms a double gallery. Following the crawlway (0.3 metres high), we reach a small room from where we can continue in different directions. To the S, through a crouched passage we find two holes that connect to a 4 metre vault with walls covered in mud and limestone blocks very broken up by dissolution.

If, on the contrary, we follow towards the W, we will end up at a parallel gallery, from which we can take two directions: towards the S we will climb a muddy ramp and continue 5 metres crouched, where the gallery ends; in a N direction the gallery climbs passing a small bedrock and, on a steep slope, we reach a horizontal gallery of 6 metres, at the end of which, and through a narrow passage, one accesses a chimney 4 metres high very full of mud.

Cavity structured on two important joints. The larger one takes the direction N30E-S30O and is the one that forms the main gallery, including the entrance mouth. The second is the one that forms the side gallery, it has the same direction but is slightly inclined. The mouth has opened to the exterior by collapse of the vault and has caused the large debris cone.