Yumen Pass, China

The Small Fangpan Castle at Yumenguan - entrance from the north

Yumen Pass (simplified Chinese: 玉门关; traditional Chinese: 玉門關;pinyin: Yùmén Guān), or Jade Gateor Pass of the Jade Gate, is the name of a pass of the Great Walllocated west of Dunhuang in today'sGansu Province of China. During theHan dynasty (202 BC - 220 AD), this was a pass through which the Silk Road passed, and was the one road connecting Central Asia and China, the former called the Western Regions. Just to the south was theYangguan pass, which was also an important point on the Silk Road.

Travellers to 'The Western Regions' (西域, Xiyu) left China through the famous Yumenguan 玉門關, or 'Jade Gate Frontier-post,' named for the many jade caravans that passed through it. The original Jade Gate was erected by Emperor Wudi (Emperor Wu of Han) soon after 121 BCE and its ruins may still be seen about 80 kilometres (50 mi) to the northwest ofDunhuang which was, until the 6th century, the final outpost of Chinese territory for caravans on their long caravan journeys to India, Parthia, and the Roman Empire. Source: Wikipedia 

  

Surrounding area

Remains of Great Wal

Picture Source: Collected from Internet