You 1 bus is directly accessible, the scenic spot is not big, climb a small slope to the crater, the highest peak 222.8 meters is the highest peak in Haikou, you can look at the Qiongzhou Strait. You can walk to the crater and observe it at close range. There are ferns and volcanic castor plants. The crater has a faint fragrance. It is worth playing slowly, half a day is enough.