

The salt flats are on the National Register of Historic Places, are designated as an Area of Critical Environmental Concern, and are managed as a Special Recreation Management Area. Like the Great Salt Lake, the Salt Flats are a remnant of Lake Bonneville, which covered over one-third of Utah from 10,000 to 32,000 years ago. Located 120 miles west of Salt Lake City in Tooele County, Utah, the salt flats are a 30,000 acre expanse of hard, white salt crust on the western edge of the Great Salt Lake Basin in Utah. The salt flats are about 12 miles long and 5 miles wide and are comprised mostly of sodium chloride, or table salt. The Bonneville Salt Flats are one of Earth's most unique landforms. Collaborative Action and Dispute Resolution.
