Canyon Country, the Grand Canyon of the Yellowstone River, is 24 miles of twisting, sheer rock cliffs carved 1,200 feet deep. At the canyon's beginning two thundering waterfalls inspire awe. The Lower Falls of the Yellowstone, twice as high as Niagara, cascade down 308 feet into clouds of mist. Well-marked trails take the canyon visitor to spectacular vistas along the north and south rims and into the gently tolling timbered slopes and deep grassy meadows that surround the canyon. To the south lovely Hayden Valley gives serene contrast and to the north lofty Mount Washburn provides an alpine view of this canyon country.