The next most important range is the Gallatin, situated in the north-west corner of the Park, at the head of the Gallatin River. It has about seventeen named peaks, with an average altitude of 9,800 feet. The highest peak, Electric, is the loftiest mountain in the Park.
The Washburn Range, a detached mountain system, originally known as the "Elephant's Back," is situated between the Grand Cañon of the Yellowstone and the Gardiner River. It has seven christened summits, with an average altitude of 9,800 feet. The most conspicuous peak of the range, as well as the most noted mountain of the Park, is Mt. Washburn.
The Red Mountain Range is a small, detached group of mountains between Hart and Lewis Lakes. Its principal summit, Mt. Sheridan, affords probably the finest view to be had in that entire region.
The Teton Range lies mainly outside the Park, its northern spurs barely touching the southern boundary. It extends north and south along the west shore of Jackson Lake, and is a very noted range of mountains. Its highest summit, the Grand Teton, has no competitor for altitude nearer than Fremont Peak, seventy-five miles distant.
The Big Game Ridge lies along the south boundary of the Park, and is the source of the Snake River. It has six named peaks, with an average altitude of 9,800 feet.
Besides these various groups of mountains, there are a few detached peaks worthy of note, which can not be conveniently classified with any of the principal ranges.
A considerable portion of the Park area is composed of what may be termed plateaus, elevated tracts of land, not so high as the mountain ranges, but much higher than the valleys. Ordinarily, these are to be found along the divides between the larger streams. The more important are the Pitchstone Plateau, between the Snake River and the head waters of the Bechler and Fall Rivers, with a mean altitude of 8,500 feet; Highland Plateau, between the Yellowstone and the Madison Rivers, altitude 8,300 feet; Mirror Plateau, between the Yellowstone and the Lamar Rivers, altitude 9,000 feet; Mt. Everts Plateau, between the Yellowstone and the Gardiner, altitude 7,000 feet; and the Madison Plateau, west of the Lower Geyser Basin, altitude 8,300 feet.