A pond used as the motif for "resounding green" of Kaii Tozan. A reserve pond in Mt. Yatsugatake Chushin highland national park, also designated as of the best 100 ponds in Japan by the Ministry of Agriculture, Forestry and Fisheries. Also famous as a pond usded as the motif of a famous work, Mr. Kaii Tozan, a Japanese painting artist, "resounding green". The best time is the season of yellow leaves of Japanese pine, with its gold reflected on the mysterious deep-green water surface. With guiding placards. You may not go around the lake; do not get over its dike.