If you plan to tour in Glacier National Park, be aware that many areas have restricted and prohibited access in winter. Explosive artillery fire is regularly used on mountain slopes to protect highway and railway traffic from natural avalanches. The Winter Permit System separates skiers from artillery fire and the resulting avalanches.
Each winter, Parks Canada and the Canadian Armed Forces work together to release avalanches in a controlled manner before they become a threat to the transportation corridor
The Avalanche Terrain Exposure Scale (ATES) offers an avalanche classification system based on the landscape – not the snow.
Maps of common areas with major runout zones highlighted.
The Winter Terrain Atlas provides valuable visual terrain information to backcountry users of Mount Revelstoke and Glacier national parks.