Jiujiufeng

Jiujiufeng () is a nature reserve located at the border of Taichung City and Nantou County, spanning the cities of Caotun, Guoxing, Wufeng, and Taiping. The protected area contains many small, jagged peaks, hence the name.

== Description == thumb|Jiujiufeng during sunset Jiujiufeng is located on the north bank of the Dadu River southeast of Taichung City. Geologically, Jiujiufeng is located in the Toukeshan Formation (頭嵙山層), a Pleistocene-era formation primarily composed of gravelly rocks. Since the soil has high permeability, the peaks are easily eroded by rainfall to form the jagged peaks. Despite the terrain, Jiujiufeng still sustains a wide array of plant life, including the rare Reevesia formosana.