Big Drift

The Big Drift is an area along the Going-to-the-Sun Road where a large amount of winter snow can accumulate to depths in excess of 100 feet. Located immediately east of Logan Pass in Glacier National Park, the westerly winds push snow over the crest of the Continental divide onto the eastern flank of a long arête which extends south from Pollock Mountain.
The area of the Big Drift is usually reached by late May, and often can take a month to clear this one stretch of road that is slightly more than 1 mile in length.