The reserve is made up of three main islands where you still can find traces of ancient times.
Archipelago area with peculiar cultural landscape that includes the islands Arpö, Vagnö and Sladö with adjacent islands. On the islands, there have been agriculture and been resident population. The area is 1,015 hectares of which 237 hectares land. The reserve is is located 12 km southeast of Ronneby.