Zas Cave. Filoti is the starting place for several walks in the countryside, including the climb up to Zas cave where obsidian tools and pottery fragments have been found; lots of bats live inside. Mt. Zas, or Zeus, is one of the god's reputed birthplaces; on the path to the summit lies a block of unworked marble that reads Oros Dios Milosiou, or "Boundary of the Temple of Zeus Melosios." (Melosios, it is thought, is a word that has to do with sheep.) The islanders say that under the Turks the cave was used as a chapel, and two stalagmites are called the Priest and the Priest's Wife, who are said to have been petrified by God to save them from arrest. Filoti, Naxos.