After the end of the war and the withdrawal of Axis troops in 1944, the island was caught up in the Greek Civil War. The leader of the communist naval forces in the civil war, Sarantis Spintzos, was a native of Thasos. Skirmishes and communist guerilla attacks continued on Thasos until 1950, almost a year after the main hostilities were over on the mainland. In the post-war decades, another native of Thasos, Costas Tsimas, was to attain national recognition; a friend of Prime Minister Andreas Papandreou, he was appointed Director of the National Intelligence Service, the first civilian to hold that post. Thasos, the capital, is now informally known as Limenas, or "the port". It is served by a ferry route to and from Keramoti a port close to Kavala International Airport, and has the shortest possible crossing to the island. Scala Prinos 20 km south of Thassos town is served by a ferry route to and from Kavala. Thasos is a separate regional unit of the East Macedonia and Thrace region, and the only municipality of the regional unit. As a part of the 2011 Kallikratis government reform, the regional unit Thasos was created out of part of the former Kavala Prefecture. The municipality, unchanged at the Kallikratis reform, includes a few uninhabited islets besides the main island Thasos and has an area of 380.097 km2. The province of Thasos () was one of the provinces of the Kavala Prefecture. It had the same territory as the present municipality. It was abolished in 2006. Thasos island is located in the northern Aegean sea approximately from the northern mainland and south-east of Kavala, and is of generally rounded shape, without deep bays or significant peninsulas. The terrain is mountainous but not particularly rugged, rising gradually from coast to centre. The highest peak is Ypsario (Ipsario), at , somewhat east of centre. Pine forest covers much of the island's eastern slopes. Historically, the island's population was chiefly engaged in agriculture and stockbreeding, and established villages inland, some of them connected via stairways (known as skalas) to harbors at the shore. The local population gradually migrated towards these shoreline settlements as tourism began to develop as an important source of income. Thus, there are several "paired villages" such as Maries–Skala Maries, with the former inland and the latter on the coast.