Two connected vestibules form the widest part of the cavity. From the left and wider one, a tall gallery of short length emerges which, in its lower part, is obstructed by blocks and, in its upper part, comes out again to the exterior through a narrow conduit. On the floor of this same vestibule and located behind a block, is found the small mouth of a shaft of very small dimensions, especially in width.

Of the two explorations we know of, there are different assessments of its depth; that of the GIE (1961) claim to have descended about 35 metres, while in that of the GEP (1974) they estimate they were unable to get past 20 metres of depth, despite specifying that the shaft continues but that the narrowness becomes impassable.