autumn creek current fall hill leaves mountain rock stone stream trees water rapid waterfall whitewater blue clean clear cold fresh long exposure moss mossy Mountain Creek river rocks turquoise blossom brook flowers fog foggy green mist misty peace peaceful stones stony wallpaper forest light Mountain River mountains pebbles sunbeams sunset alps cascade nature Slovenia wild bavaria germany outdoor rainy summer wather grassland landscape Lofoten Islands marsh marshy natural norway norwegian rivulet shallow