Mount Logan, Canada

Mount Logan is Canada's highest mountain and the second-highest peak in North America, after Mount McKinley. The mountain was named after Sir William Edmond Logan, a Canadian geologist and founder of the Geological Survey of Canada (GSC). Mount Logan is located within Kluane National Park and Reserve in southwestern Yukon and is the source of the Hubbard and Logan Glaciers. Logan reportedly has the largest base circumference of any mountain on Earth.

Due to active tectonic uplifting, Mount Logan is actually still rising in elevation. Before 1992, the exact height of Mount Logan was unknown and measurements ranged from 5,959 metres (19,551 ft) to 6,050 metres (19,849 ft). In May 1992, a GSC expedition climbed Mount Logan and fixed the current height of 5,959 metres (19,551 ft) using GPS.

Temperatures are extremely cold on and near Mount Logan. On May 26, 1991 a record −77.5 °C (−108 °F) was observed, making it the coldest recorded temperature outside of Antarctica. It is not counted as the coldest temperature in North America since it was recorded at a very high altitude.