The underground forest is from the eruption of the volcano, the original crater is now covered by lush forests, if visitors stand on the top of the fire, look down, only green, people feel refreshed. Come to the bottom, surrounded by various pine forests, there are thousands of larchs, there are hundreds of years of spruce trees, look up at the sky, but the broad-leaved trees are all the time, there is a kind of "sitting in the well to watch the sky" different feeling. The underground forest is precious, in addition to thousands of years of ancient trees, there are many living fossils, such as the billion-year-old red lotus and the endangered Chinese autumn sand duck. Pick up and down, round the underground forest, believe you will be attracted by its ancient and primitive, there is nothing else here, only pure nature. It is a dormant volcano that erupts.