icicles on a tree trunk in a stream in winte

water nature tree rock stream reflection autumn waterfall river wilderness leaf winter forest geology formation ice plant woodland icicles trunk winte sauerland natural environment menden sauerland menden wonderland december calm flow flowing peaceful running steam stream tranquil wilderness frozen ice scene waterfall woodland frost scenic wintry beauty brook covered creek hoarfrost nature season winter snow snowy details water fall icicles trunk cold climate weather glacier stick fringe reflections trunks foliage landscape crystal