The city's name in Chinese () means "The Gorge of Three Gateways" and is derived from two islands that split the Yellow River into three parts. According to Chinese mythology,
Yu the Great used a divine axe to cut the mountain ridge three times, creating the Sanmenxia gorges to prevent massive flooding. The three "
men" or gates were then named "The Gateway of Man" (), "The Gateway of Gods" () and "The Gateway of Devils" (). During the
Han and
Tang dynasties, there were projects to improve navigation at the entrance of the gorge by building
towpaths and navigation channels, as well as removing boulders. With the construction of the
Sanmenxia Dam in the late 1950s, the ancient passes were flooded. During the
Western Zhou dynasty, Sanmenxia was part of the territory of the
State of Western Guo, ruled by relatives of the ruling Ji family of Zhou. Guo moved its capital from modern day
Baoji to Shangyang (), next to Sanmenxia. Later, this territory was annexed the
State of Jin. Archaeological finds near Sanmenxia between 1956 and 1991 revealed mass chariot graves and bronzeware of Western Guo State rulers. Furthermore, the archaeological site "Shihao Section of Xiaohan Ancient Road", an excavated pathway that is part of the
world heritage site "
Silk Roads: the Routes Network of Chang'an-Tianshan Corridor", is also located in Sanmenxia. In 2011, the
Sanmenxia Cultural Sports Centre Stadium opened. The association football venue has a capacity of 22,000. ==Geography and climate==