富士五湖の一つで、水深138mと全国の湖でも屈指の深さを誇る。「千円札の富士山」の景色としても有名。レイクスポーツ（ウインドサーフィン・ヨット等）やキャンプ等、様々なアウトドアが楽しめます。アニメの聖地にも登場。
| 下部温泉駅より20km 車で 35分 | Googleマップ |
Boasting a depth of 138 m, it is one of the Fuji Five Lakes and one of the deepest lakes in Japan. It is also well known as the scenery of “Mt. Fuji on 1,000 yen notes”. You can enjoy various outdoor activities such as lake sports (windsurfing, yacht, etc.) and camping. It also appeared as a pilgrimage spot in anime.
