The most commonly found monkeys in China are macaques, which have oversized cheeks to store food and live in large troops. The range of the rhesus or common macaque extends from as far north as the Taihang Mountains of Shanxi and down to Hainan. Tibetan macaques are often seen at tourist sites such as Mount Emei and Huangshan. Stump-tailed macaques have distinct red faces and live throughout southern China. The Formosan rock macaque is endemic to Taiwan. Assam macaques are found in higher elevation areas of southern Tibet and the Southwest, and the northern pig-tailed macaque in Yunnan.