Tourists queue to take mountain cable cars at the National Forest Park of Tianmen Mountain in central China's Hunan Province, July 21, 2012. As one of the most representative natural sceneries of Zhangjiajie, Tianmen Mountain attracted visitors not only by its miraculous geographic landform and unparalleled landscape but also well known for its profound cultural connotations and famous humanistic sites. [Xinhua/Long Hongtao]