Ключевые слова: alpine landscape, alpine skiing, alpine trees, back country, backcountry, barrier, blackcomb, blue, boundary, canada, clear mountain sky, closed, danger, forest, fresh snow, hazardous, out of bounds, patrolled, pristine, regulation, risk, sign, ski, ski area boundary, ski patrol, sky, snow, snow covered mountains, snow covered trees, warning, whistler, whistler canada, whistler mountain, whistler mountain ski area boundary, winter,