The Datça Peninsula, also known as the Reşadiye Peninsula, is an 80 km-long, narrow peninsula in southwest Turkey separating the Gulf of Gökova to the north from the Gulf of Hisarönü to the south. The peninsula corresponds almost exactly to the administrative district of Datça, part of Muğla Province. The town of Datça is located at its half-way point.Older names for the peninsula include the Dorian or Cnidos Peninsula or the Chersonisos Cnidia.Main featuresThe eastern half of the peninsula is bare, mountainous and scarcely inhabited. In the middle of the peninsula, centered around the town of Datça, is the peninsula's largest area of good land, extending towards the southwest of its median isthmus dividing the two halves of the land mass. The western part is also mountainous, rising in places over 1,000 meters, but has towards its western end on the south side a considerable extent of well-watered land reaching to the coast at Palamutbükü locality and supporting a group of villages known collectively as Betçe (the five villages).At the tip of the peninsula in its extreme west is the locality called Tekir, marked by Cape Deveboynu, formerly Cape Crio/Kriyo. The cape in itself is a small peninsula which is nearly an island, connected to the mainland by a low, 100m-wide spit of land; in antiquity it was a man-made causeway. The ancient name of the island was Triopion, after Triopas, the legendary founder of Knidos.