Tonsa Peak

Tonsa Peak is a 3,053-metre summit on the Alberta-British Columbia border along the Continental Divide in the Canadian Rockies. Rising above the Valley of the Ten Peaks, it forms part of the backdrop to Moraine Lake in Banff National Park. Samuel E.S. Allen named it in 1894 using the Stoney word for four, linking the mountain to the use of Indigenous words in naming Rocky Mountain landmarks during a period of exploration and mapping. Built of sedimentary rock deposited from the Precambrian to the Jurassic and later uplifted during the Laramide orogeny, it also divides drainage east toward the Bow River and west toward the Vermilion River.

Alberta · Canada