房山区
Zhoukoudian Peking Man Site (), also romanized as Choukoutien, is a cave system in suburban Fangshan District, Beijing. It has yielded many archaeological discoveries, including one of the first specimens of "Homo erectus" ("Homo erectus pekinensis"), dubbed Peking Man, and a fine assemblage of bones of the gigantic hyena "Pachycrocuta brevirostris".