The ford across the river Dzwina on which Wolin is located has been used as far back as the Stone Age. Archaeological excavations of soil layers indicate that there was a settlement in the area during the Migration period, at the turn of the 5th and 6th centuries. The place was then abandoned for approximately one hundred years. At the end of the 8th or the beginning of the 9th century, the area was levelled and a new settlement constructed. The earliest evidence of fortifications dates to the first half of the 9th century. In the second half of the 9th century, there was a central fortified area and two suburbs, to the north and south of the center. These became enclosed and fortified between the end of the 9th and the 10th centuries.