blow blown blue canada conifers forest lake mountain natural nature peak rock Rockies Rocky Mountains shore snow summit white boulder canoe canoeists cliff enormous holiday huge leisure reflection small sport tiny vacation water green landscape marsh snowy cold descend fall freezing frozen glacier ice slide conifer danger evergreen jagged mountains river rocky sharp tree wall wood boulders current fast flow rapids rocks trees view height high range razor series tall altitude destination direction downhill hiking path sunlight track trail travel Trek clear moraine transparent glacial icy meltwater