Near Agia Marina, in Kasos, you will find the famous cave Ellinokamara.
Ellinokamara has a large natural opening which has been closed with masonry since antiquity. To the surprise of some, this masonry survives almost intact. Traces of an altar, sherds and clay vessels, indicate that the cave was probably used as a place of worship. The interior has an area of about 250 meters and is divided into three rooms. Based on the findings, archaeologists speculate that a disaster (probably earthquake ) made the cave unsuitable for use.
Ellinokamara cave is worth visiting, not only for its archaeological significance but mainly because from there you can admire the spectacular views of the area.