Along the road between the settlements of Pelopi and Ypsilometou, rises the impressive volcanic neck located near the church of Agios Nikolaos Pelopi.
It is a volcanic structure, approximately 17 million years old. It is a lateral volcanic conduit that was fed by the underground magmatic chamber of the Lepetymnos volcano, with dacite lava. The magma rose slowly to the surface without creating a violent volcanic eruption.
Over time, the rocks that covered the more erosion-resistant volcanic materials were eroded, resulting in the creation of the impressive volcanic neck, which characterizes the landscape and geological history of the area.
