The impact of the region’s 50 glaciers can be seen in the form of mountains, lakes, and valleys. Waterfalls cascade down from valleys suspended in mid-air. At the same time, the Garden Wall serves as a spectacular example of an arête (a narrow ridge left by glacial erosion on both sides). Cirques (basins in the form of an amphitheater with steep sides) are also widespread. Mount Cleveland, at 10,466 feet (3,190 meters), is the park’s highest peak.
Dense forests of lodgepole pines, spruces, firs, hemlocks, and cedars cover the steep western slopes, while alpine meadows are home to blooming heathers, bear grasses, and glacier lilies. The drier plains to the east have prairie grasses strewn over them. Mountain goats and bighorn sheep live at the highest altitudes, while black and grizzly bears, as well as deer, moose, and elk, wander the forests. Gray wolves started to reappear in small numbers in the mid-1980s after being eliminated from the area earlier in the century. Bald eagles are the most famous species among the more than 250 species of birds that dwell in or travel through the park. The various lakes and streams are home to trout, turtles, and the odd salmon.