This is a coastal lake with a circumference of 5 km, located in the Yonari district. Around the lake are native flower gardens (colonies of Rhus succedanea, Ezoensis, Ganko Uranium, etc.), and from June to September, colorful flowers are in full bloom.
During the winter, wakasagi (smelt) fishing can be enjoyed, attracting many anglers. Nearby is the Bansei Hot Springs, where you can warm up after a day of fishing.