canada chasm cliff current deluge descent drop fall flow gorge montane moss mountain natural nature opening pour river rock Rockies Rocky Mountains shade.shadow surge water conifer forest shade shadow tree Athabasca boulder falls fierce landscape plunge torrent turmoil waterfall Banff bank Bow Falls channel conifers danger dangerous foam rage rapids rocks trees violent boulders countryside exercise footpath green hike hillside norway norwegian path snow track trail walk wild abstract appearance backdrop background close-up color colored colors colour coloured colours decorative Dirt feel garden garden pebbles gray grey pebble patch pebbles rain rain drops river rocks rounded shiny smooth smoothed striations surface surfaces tactile textures variations varied variety veined veins ceylon creek exotic lianas lush foliage national reserve plants rainforest reservati sri lanka sun sunbeams sunburst tropical vegetation