The access opening, rectangular in shape and measuring 0.80x1.20 metres, is at the bottom of a fracture 8 metres long and 1.50 metres wide, oriented at 33º N.

The cavity begins with a small access shaft of 4 metres. This relatively narrow shaft opens onto a small 2-metre platform with a debris cone at -6.60 metres. Then, towards the north, there are small steps that lead quickly down to -10 metres.

The last step continues into an impenetrable fissure, with no notable air current, with visibility of about 3 metres.