Logan, Mount, 19,551 ft (5,959 m) high, in Kluane National Park, extreme SW Yukon, Canada, just E of Alaska; highest mountain in Canada and second highest in North America. One of the St. Elias Mts., it caps an immense tableland and is the center of the greatest glacial expanse in North America. Named for Sir William Logan, the Canadian geologist, it was first climbed in 1925.
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