Fukushima
Fukushima lies on the Tsugaru Strait, between the sea and the forested mountains of southern Ezo. According to local tradition, gold miners came to the slopes of Mount Daisen-gen in the early seventeenth century, bringing prosperity to the area. The Matsumae domain maintained a guard post to oversee mining in the Senken district. Village documents also preserve a long dispute over the boundary between Fukushima and neighboring Shirafu, beginning in 1739.