Lake Obuchi-numa

One of the lakes in Rokkasho, a village facing the Pacific Ocean on the east side of the base of the Shimokita Peninsula in northeastern Aomori Prefecture. The lakes, marshes, and wetlands in the area are believed to have been ocean during the coastline transgression which occurred in the Jomon period. Many artefacts have been discovered in the lake and it has been designated a National Important Cultural Property.