约翰斯顿峡谷，加拿大班夫国家公园

nature outdoor water river landscape creek plant stream tree forest waterfall watercourse riparian zone natural landscape nature reserve water resources cascade rainforest jungle state park riparian forest arroyo wooded surrounded rock mountain river fluvial landforms of streams old-growth forest body of water tributary grass fall non-vascular land plant moss tropical and subtropical coniferous forests rapid sky ravine wilderness mountain cloud narrow green wood woodland