Located around 15km to the south-west of Haikou city, next to the volcano park lie the 72 caves and Rong Tang village.
The cave’s lava tunnel runs to 780 meters long, 3-4 meters high with a width of around 20 meters.
Parts of the tunnel roof have collapsed in places allowing light to stream into the tunnel below like a window, open to the dense woodland above.
Located right next to the caves, the village has around 50 cottages scattered here and there. Some are in ruin, and others liveable. The cottages date back to the Ming Dynasty and come in many different styles, all are made from volcanic rock.