Dolin is a small, northwest-southeast-elongated island in the Kvarner Bay of Croatia. At its narrowest point, it lies only about 300 meters from the island of Rab, from which it is separated by the Barbat Channel (Barbatski kanal).[1] The approximately 9 km long island is partly wooded and partly covered with shrubs. At the northern end of the island stands a lighthouse, which marks the entrance to Rab's town harbor.