boulders canada conifers current fast flow forest landscape natural nature rapids river Rockies rocks Rocky Mountains trees view water cliff conifer danger evergreen fierce gorge power rock tree wall wood green lake mountain reeds shore snow edge grand mountains peak rocky summit coast guide hazard light lighthouse little pacific phare red safety small squat Vancouver Island warning white blow blown blue base bridge Burrard coastline crossing gate girder hillside inlet lions span spar support suspension underneath underside vancouver animal back cetacean dive fin hump humpback mammal marine Megaptera novaeangliae ocean ridge sea whale Cairn Coast Mountains hike hiking range snowy top trail Trek waymarker