abraded bare bleak boulder break broken canada eroded erosion hard high layers montane mountains natural nature pieces rock Rockies rocky shards splintered stone summit terrain weathering worn altitude forest green height jagged landscape Morning mountain peak shadow sunlight America cloud lake panorama sky usa water flora flowers grassland pink prairie Rocky Mountains summer wild horizon pool rocks view Andalucia bluff cliff danger hill outcrop Spain tree alberta aqua Banff blue canadian rockies glacier Lake Louise moraine lake peaks reflection scenic shore snow ten tranquil trees valley