Zhoukoudian Entrance

Zhoukoudian or Choukoutien (Chinese: 周口店; pinyin: Zhōukǒudiàn, IPA: [tʂóʊkʰòʊtjɛ̂n]) is a cave system in Beijing, China. It has yielded many archaeological discoveries, including one of the first specimens of Homo erectus, dubbed Peking Man, and a fine assemblage of bones of the gigantic hyena Pachycrocuta brevirostris. Peking Man lived in this cave approximately 750,000 to 200,000 years ago.

• http://en.wikipedia.org/wiki/Zhoukoudian
• New Scientist, v. 220, Issue 2944, p. 26-40. 
• Page 149 - Hunt, P., 2007, Ten Discoveries that Rewrote History: Penguin, New York, 226p.