The island is well-known for the alternation of forest covered mountains & sheer rocks. The range Atheras whose the tallest point reaches the 1.040 metres above sea level, goes across the island. Some of the villages are located in the valleys near the coastline while some others are up the mountains.
In the east, few miles away from the island’s capital, Agios Kirykos, one can see Fournoi, a group of small islands which during the classical period were named Korsiei. 12 miles north-eastern of Ikaria one can see the mount Kerkis of Samos while in the south lays the small island of Patmos. Geologically, Ikaria is a part of the crystalline rock which starts from Asia Minor, passes through Samos & stretches out towards Cyclades