 The highest point is Mount Skopia at the altitude of 430 m. The chief towns are Myrina, on the western coast, and Moudros on the eastern shore of a large bay in the middle of the island.Myrina (also called Kastro, meaning "castle") possesses a good harbour, which is in the process of being upgraded through construction of a west-facing sea wall.It is the seat of all trade carried on with the mainland.