bank cane meadow nature plants river shore stream trees water british brook countryside England english Great Britain landscape plant rural somerset spring tree fierce flow foam granite gush hard norway powerful rock rush spate stone strong abstract colombia cooling fresh rapids rocky rolling rapids algae background brackish bush bushland colors colours cool country creek crowded dark flowing foliage grass grasses green greenery grounds light moving peaceful reeds reflecting reflections ripples rippling running rushes shade shadows slow sluggish stones streaming sunlight sunshine textures tranquil uncultivated vegetation wet Asia fall forest jungle Malaysia rain rocks selangor ulu waterfall yam ecology summer wales wood autumn fishstaircase leaf Nyberg