At position Patelia, about 1 km NW of Sitanos we meet the large cave of Oxo Latsidi, formed in Jurassic limestone. It was originally accessible for 50m. It was later studied by Paul Faure and mapped by Eleftherios Platakis and Ioannis Tsifetakis, who found a long tunnel 360m long. After the entrance we meet a room (34m x 16m) and a chamber on the right (32m). On the left, for 330m extends the tunnel with a width of 2-8 m and a height from 0.5m-1.5m. Recent surveys give the cave a longer length of up to 1.000 m. The different flows of water give the impression that it was once an underground riverbed. Generally the decoration is poor.