The eruption of Shihetian Volcano fell. The area is 59.8 square kilometers, and the lake is 400 meters above sea level. The depth of the lake is about 70-100 meters, and the deepest 326.8 meters. The surface water temperature in summer is 22.3℃, in winter 0 ℃, and the deep end is 5 ℃. The rainbow trout is built at the drainage mouth. It is designated as a national park and a tourist attraction.