Geography 
Salt Lake lies in a mountain valley with the Wasatch Mountains to the east and north. The Oquirrh (pronounced "oaker") Mountains border the western edge of the valley. Salt Lake's official elevation is 4,330 feet/1,320 meters above sea level. The city is situated on land once covered by the prehistoric Lake Bonneville. This ancient lake existed within portions of Utah, Nevada, and Idaho, with an elevation rising from 4,200 feet to 5,200 feet (1,280 meters to 1,585 meters) at some points. The eastern and northern portions of the city are located on a series of terraces, or former beaches, which are known locally as "the benches."