Dalmatia is one of the four historical regions of Croatia, alongside Central Croatia, Slavonia, and Istria, located on the east shore of the Adriatic Sea in Croatia. Dalmatia is a narrow belt stretching from the island of Rab in the north to the Bay of Kotor in the south. The Dalmatian Hinterland ranges in width from fifty kilometres in the north, to just a few kilometres in the south; it is mostly covered by the rugged Dinaric Alps.