Yitong Volcano Group National Nature Reserve Travel Guide - Volcano Group3 / 4Yitong Volcanic Group National Nature Reserve Tourism Guide - Animal Resources
Introduction to Xijianshan: Xijianshan was formed about 20.8 million years ago. Its basalt columnar joints are a wonder of the world, similar to the rock columnar joints of the volcano known as the "Devil's Tower" in Wyoming, USA. Xijianshan is also known as the "Oriental Devil's Tower".
Yitong Volcanic Group National Nature Reserve Travel Guide - Xijianshan
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