Lake Futatsuno
This beautiful, emerald green lake is a dam lake. One of the country's most prominent wintering spots for mandarin ducks, it is said around 5% of all mandarin ducks who migrate to Japan come here. On the left bank, there are neither roads nor human settlements, and the forest which sprawls on this side consists of beeches and evergreen oaks, trees whose nuts are a favorite of mandarin ducks and also their primary food source when overwintering. Additionally, the lake's water level and temperature are quite stable and visitors can enjoy fishing here during the fishing season.