Volcanoes Geology Park Tengchong is a well known young volcanic and geothermal area in China. There is an old saying that "Nine out of ten mountains have no head." to describe the volcanoes there. It is a National Geology Park. The volcanic cluster here is known worldwide for its complete examples, large scale, intensive distribution and complete preservation. Nicknamed a "natural volcanic geology museum", all the roads leading to the park are paved with volcanic rock, which are better for drainage.