The Dabie Mountains (traditional Chinese: 大別山; simplified Chinese: 大别山; pinyin: Dàbié Shān) are a major mountain range located in central China. Running northwest-to-southeast, they form the main watershed between the Huai and Yangtze rivers. The range also marks the boundary between Hubei Province (near Tingqian town) and its neighbors of Henan (to the north) and Anhui (to the east). During the late 1920s and early 1930s, the Dabie Mountains were a stronghold of the Chinese Communist Party and the location of the Eyuwan Soviet.
The western part of the Dabie Mountains has a low elevation of only 1,000–1,300 feet (300–400 meters), though there are a few peaks rising to 3,000 feet (910 meters). The eastern part is higher, averaging more than 3,300 feet (1,000 meters). The highest peak is Baimajian at 1,777 meters (5,830 feet), with several others topping 5,000 feet (1,500 meters) including the 1,729.13 meters (5,673.0 ft) high Tiantangzhai.