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segment of the Pacific mountain system of western North America that is wholly within the state of Alaska, U.S. It extends eastward along the coast for about 300 miles (500 km) from Turnagain Arm of the Cook Inlet (Gulf of Alaska) to Cape Yakataga in southern Alaska. Many peaks exceed 11,000 feet (3,400 metres), with Mount Marcus Baker (13,176 feet [4,016 metres]) the highest. The southern slope of the mountains, which were named for an Eskimo tribe, lies within Chugach National Forest, and the eastern portion passes through Wrangell-St. Elias National Park and Preserve (the largest unit of the U.S. national park system). Skiing is a popular activity in the mountains.