Leiqionghaikou Volcano Group World Geopark is located in Shishan Town, southwest of Haikou City. The geological relics of the rift valley-based volcanic activity are diverse, almost covering all kinds of volcanoes erupting from basalt volcanoes, both lava cones and mixed cones. There are more than 30 lava tunnels in the Maer volcano formed by the interaction of magma and groundwater, the longest reaching more than 2,000 meters. Its internal shape and landscape are rich and wonderful, which are rare at home and abroad.