Is Daihu Lake in Jinyun Mountain in Beibei a crater?

Jinyun Mountain, located in Beibei District of Chongqing, is a national 4A-level forest scenic reserve. Dai Lake was cut off in 1930s. Because the lake is as green as Dai, Wu Yu 1930, a poet of Jiangjin Baijia, named it Dai Lake, and calligrapher wrote "Dai Lake" on 1935. Lake is a treasure house of algae genes in China, which concentrates 80% of algae in China. Daihu Lake is located at the back of Long Shao Temple, next to the road interrupted by Jinyun Mountain. From a distance, from a close distance, the weather changes, seasonal differences, etc., all present different aesthetic feelings.