Tianzhu Mountain or Mount Tianzhu (Chinese: 天柱山; pinyin: Tiānzhù Shān; literally "Heaven pillar mount") is a mountain in Anhui, China. Tianzhu Mountain is also called Mount Wan (Chinese: 皖山; pinyin: Wǎn Shān), from which the provincial abbreviation for Anhui ("Wan") derives. The mountain locates in Qianshan County, Anqing City. Tianzhu Mountain has 45 peaks which are 1000 meters above sea level. Its highest point has an elevation of 1,760 metres (5,774 ft). There are two paths to reach the top, either from the east or from the west; Dalong will try the west path first because it is the easier one.
One of the famous sites is the Mystery Valley (Chinese: 神秘谷; pinyin: Shénmì Gǔ). It is a maze-like valley formed by the rocks falling from the mountain. The valley has 53 caves, which form a very complicated maze.