Yanmenguan Pass Located on the Yanmen Mountain northwest of Dai County, Shanxi province, Yanmenguan Pass is one of the Outer Three Passes (the rest two are Ningwuguan Pass and Pianguan Pass) along the Great Wall.

The Yanmen Pass is located in a position of military strategic importance. The mountain peaks around shoot up, with small paths that zigzag along the mountain valley. The pass was built in the seventh year of the Reign of Hong Wu Emperor, Ming Dynasty(1374 AD). Now on the pass there are still three existing towers that house a number of steles and the Tomb of Li Mu, a famous army general during the Period of Warring States (475 - 221 BC).