
Lake O-numa
Hokkaido
Lake O-numa, located in the southern part of Hokkaido, is part of O-numa Quasi National Park, together with the nearby Ko-numa and Junsai-numa marshes. Lake O-numa is 24 kilometers in circumference and was formed by the eruption of Mt. Koma-ga-take. It has 126 islands, large and small, and is famous for the spectacular views of these islands connected by 18 bridges.