Arxan Heavenly Lake is on the Heavenly Lake Mountain which is 74 kilometers away from the northeast of Arxan City. It is one of famous Heavenly Lakes in China. It is a large oval lake with the altitude of 1,323.2 meters, about 450 meters in length and 300 meters in width. The lake covers about 13.8 hectares, and it is 1,500 meters in circumference. Arxan Heavenly Lake ranks third place in China after Tianshan Heavenly Lake and Changbai Mountain Heavenly Lake. It is a high crater lake that was formed by volcano eruption when magma met groundwater and exploded 300 thousand years ago .
Arxan Heavenly Lake has many miraculous points. The first is that it will never dry during the drought and will never flood during rainy season. The lake is always as smooth as a mirror which reflects green pines and cypresses, blue sky and white clouds. The second is that there is no river flowing in or out of the lake, but the water in the lake is always clean and pure. The third is that there are plenty of fish in other lakes around, but no fish is found in Heavenly Lake till now. Once someone put fish fries into the lake, but no live fish nor dead fish was seen in the lake. It is very strange. The fourth is that the Heavenly Lake is too deep to be measured. Once someone fastened heavy things to a long rope and put it into the lake in order to measure its depth. But it still didn’t touch the bottom when more than 300 meters rope was in the lake. Therefore, people believe that Heavenly Lake is too deep to be measured. Someone said in an interesting way that Heavenly Lake is connected with the earth’s core. Many people have many imaginative thoughts about it.