Gobi Desert it is also located on a plateau roughly above sea level, which contributes to its low temperatures. An average of approximately of rain falls annually in the Gobi. Additional moisture reaches parts of the Gobi in winter as snow is blown by the wind from the Siberian Steppes. These winds may cause the Gobi to reach in winter to in summer. However, the climate of the Gobi is one of great extremes, combined with rapid changes of temperature of as much as . These can occur not only seasonally but within 24 hours. In southern Mongolia, the temperature has been
Gobi Desert of Gobi is crossed by several trade routes, some of which have been in use for thousands of years. Among the most important are those from Kalgan (at the Great Wall) to Ulaanbaatar (); from Jiuquan (in Gansu) to Hami ; from Hami to Beijing (); from Hohhot to Hami and Barkul; and from Lanzhou (in Gansu) to Hami. The southwestern portion of the Gobi, known also as the Hsi-tau and the Little Gobi, fills the space between the great north loop of the Yellow River on the east, the Ejin River on the west, and the Qilian Mountains and