Introduction to the Devonian Geological Section: The tourism resource characteristics of the Yuanwangdong mountain canyon in Jiuhuang Mountain of Western Qiang are generally reflected as strange, beautiful, majestic, dangerous and unique. From Shawozi to Guixi Countryside Changkou 12 Within the scope of the canyon, the standard geological section of the Devonian System in China's Longmen Mountains reflects the changes of the earth between 350 and 400 million years. Its landscape resources include: the gentle and multi-level slopes on the west side of Ape King Cave, the strong cliffs on the east side, the top of the three-level platform, the majestic Qianren cliff with a length of more than ten kilometers, and good-shaped stalagmites, Wind stone, mushroom stone, etc.