alberta aqua Banff blue canada canadian rockies cliff glacier lake Lake Louise moraine lake Morning mountains peaks reflection rocky scenic shore snow summit ten tranquil trees valley water bare bleak craggy hard hike jasper landscape mountain natural nature panorama peak people range rock Rockies Rocky Mountains rough shale trail travel Trek view walk walker austere cold dangerous difficult environment extreme face forbidding freezing frozen harsh high ice icy mountainside severe stern dawn debris retreat scraped scratched scree sky sunrise worn canoeists canoes cloud danger exposed glorious glory light radiance radiant ripples storm stormy sunlight threatening violent vulnerable silt altitude avens broken Dryas endurance endure flower hardy height montane plant resilient seedhead shattered splintered stark top tough