Skiathos is a small Greek island in the northwest Aegean Sea. Skiathos is the westernmost island in the Northern Sporades group, east of the Pelion peninsula in Magnesia on the mainland, and west of the island of Skopelos. The island has a northeastern to southwestern direction and is about 12 kilometer long and 6 kilometer wide on average. The coastline is indented with up to 65 sandy beaches, inlets, capes and peninsulas. The southeast and southwest parts have gentler slopes and that is where most of the sandy beaches, settlements and facilities are located. The terrain is hilly but more rugged on the north coast, with the highest peak at 433 meter. There is a communications tower on this peak. The main town is the Town of Skiathos (pop. 4,988 in 2001) and along with the airport are located to the northeast next to a lagoon. Other settlements along the coastline are anemos (195), Kalyvia (179), Troulos (159), and Koukounaries (126).