Segment of the Pacific Coast Ranges in the southwestern Yukon Territory of Canada and eastern Alaska, U.S. The mountains extend southeast about 250 mi (400 km) from the Wrangell Mountains to Cross Sound along the Canada-U.S. border.
Many peaks exceed 17,000 ft (5,200 km), including Mount St. Elias (18,008 ft [5,489 km]) and Mount Logan . In 1741 Vitus Bering sighted Mount St. Elias from his ship and became the first official European discoverer of northwestern America. The mountains contain the world's most extensive ice fields outside the polar ice caps. The southern end of the range forms part of Glacier Bay National Park .