Depth 14-19 m. This cave is essentially straight and has no branches. The entrance is 15 meters deep and the first stretch the bottom is covered with sediment. About 40 meters of the 100 m long, inward sea water mixes with fresh water from the mountain, a fact perceive the change in temperature and visibility. From this point until the end, transparency of water and peeled and pointed rock form a landscape of unusual lunar look. The width of the cave is about 3 mtrs and ascends gently up to 1 mtrs deep to reach the end of the tunnel.
Inside the cave we can find some diverse wildlife as brótolas, sponges or lobsters.