University of Bristol - Historical Photographs of China reference number: OH-s02. Photograph by S. Yamamoto, published as a post card, showing the ancient arch (Yuntai or The Cloud Platform (云台), which is also known as the Language Archway or Gate of Six Languages (Sanskrit, Tibetan, Phags-pa, old Uyghur, Chinese, Tangut). The gateway is at Nankou (Nankow) Pass (Harmony or Juyong Pass) (now Juyongguan 居庸). The Cloud Platform is a way through a branch of the Great Wall (长城), about 40 miles north of Peking (Beijing). See also Bk04-14, Bk04-54, DC-s09, NA01-86.
Ancient gateway at Juyongguan, Great Wall of China