The Haikou section of the Leiqiong Global Geopark, at Shishan town in Xiuying District. More than 40 volcanic cones; the Ma’anling crater is the most intact and you can walk down to its floor. Lava tunnels crisscross the area, the largest walkable for tens of metres. Tropical growth covers the rock completely — it looks like a hill, but you are standing on lava.
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