The Columbia Icefield is located on the boundary of Banff and Jasper National Parks. One of the largest accumulations of ice and snow south of the Arctic Circle, it covers an area of nearly 325 square kilometers. The continuous accumulation of snow feeds eight major glaciers including the Athabasca, Dome, and Stutfield Glaciers, all visible from the Icefields Parkway. The Columbia Icefield is a true "continental divide," for its melt water feeds streams and rivers that pour into the Arctic, Atlantic, and Pacific Oceans.

The Columbia Icefield is a surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains. Lying on a wide, elevated plateau, it is the largest icefield in the Canadian Rockies. Nearly three-quarters of the park's highest peaks are located close to the icefield; ideally placed to catch much of the moisture that Pacific winds carry across the British Columbia interior. Most of this precipitation falls as snow; up to 21 feet a year!

Since more snow falls in a year than can melt during the short summer season, it accumulates. As time passes, the snow transforms into ice and begins to flow outward through gaps in the mountains surrounding the icefield, creating great tongues of ice called glaciers.

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