The crater national forest park is located in Ning'an City, Heilongjiang Province. It is a natural scenic tourist resort with lake and mountain colors. It integrates ecological environment, health care functions, natural landscape and human landscape. Since 10,000 years ago, volcanic eruptions have formed a group of underground lava holes formed by craters and magma flows of 7 different diameters. The broad-leaved red pine forest, commonly known as "underground forest", formed on the native bare ground, enjoys a high reputation at home and abroad. The small North Lake in the park is a typical alpine fortress lake like Jingbo Lake. The park was officially approved by the State Forestry Ministry in 1991 and was named the first "civilized forest park" in 2001.