Introduction to the pumice forest formation zone: There are three peaks here. The first sand peak is called "Dali Danga", which means shadow wall in Manchu. According to legend, the old King Nurhaci once rested with his back against the sand peak. He felt that the sand peak had spirituality, so he named it "Dali Danga", which means a shield from wind and rain, implying that he will be blessed from now on. The second water peak is called Shenlu Peak, which reflects the Manchu people's worship of deer. The third sand peak is called Snake Pillar Peak. The Snake God Pillar is the totem pole of the Manchu people. Among the shamans, the snake god Zabu occupies the position of good god, and many clans and tribes worship it.