The mouth is surrounded by a masonry frame that in other times would have housed a door. It begins with a gallery on a steep slope, in which stone slabs have been made into steps on the floor, and after about 20 metres of passage it reaches a chamber of regular dimensions. To the W a passage continues which, after overcoming a narrow spot, connects two small low chambers filled with lithogenic formations. In this same passage there is a small portico that opens into the largest chamber of the cavity. In the northernmost section of it there is an area of blocks at floor level, partly cemented by lithogenesis, which allows passage between them to small vertical conduits, some of them interconnected. At the opposite end of this chamber an ascending gallery begins, subdivided by an enormous chaos of blocks, and in its upper section it connects with the entrance gallery, a few metres from the mouth.

The small chambers of the west passage are filled with lithogenic formations. In the main chamber, an area of blocks is partly cemented by lithogenesis. An important chemolithogenic phase shaped the current appearance of the cave.

Cavity originated along the bedding planes that present a strong dip towards the NW. The different joint systems allowed the absorption of waters that excavated a primitive cavity constituted very possibly by a single chamber, later affected by an important clastic process that subdivided it, and subsequently an important chemolithogenic phase was superimposed that shaped the current appearance of the cave.