The largest of the many swamps in the main village, this swamp can be seen from National Route 238, and its water surface at sunset is exceptionally beautiful.
In November, swans fly in from Siberia to rest their wings for a while, and their graceful appearance can be seen.
After that, the swans continue their journey south, but around April, after their wintering season has passed, they return to this swamp to announce the arrival of spring in the northern lands.