Some of them headed to the IGA industrial gas factory just outside of town. The town is frequented not only by sailing boats during summer season, but also tankers. The other defining feature of this region is the Settlement of Östervik, the municipal center of Östertörn and an important shipping port. Ranging from Hagaboda in the north down to Östervik in the south, the Tylöveden forest provides recreational opportunities as well as industrial logging opportunities, and was a popular hiding place for robber bands ever since the medieval period. Wedged in between the Kilslagen mountains and the Tylöveden forest, these plains made the perfect location for the air force to establish their base F23 Överby - one of many similar such installations throughout Sweden. The fertile soils of inner Östertörn have been used for agriculture for thousands of years, ever since the post-Ice Age isostacy raised what used to be a seabed above the surface. The fortress itself dates back over a hundred years, but has been modernized with state-of-the-art modern artillery during the Cold War, albeit not necessarily in the public eye. One of the mayor employers in the region is the army, due to the Torsberga coastal fortress. The region is reminiscent of the Swedish west coast and is famous for its picturesque fishing villages nestled in between large coastal bedrock hills. The South Coast region consist of the large peninsula called Hisinganäset as well as the Sävered coastal area.