afterglow Atmospheric phenomenon darkness dusk evening horizon Morning silhouette sky sun sunlight sunrise sunset water waterway bridge cantilever cross crossing dark Edinburgh Forth girder rail railway river scotland sea steel train beach ebb landscape light low natural nature rural sand stream tide wet wild background below blue coral deep green life movement night peace relax under underwater wallpaper artistic bright brilliant colors colours displays fountains golden patterns reflections regularity Rhythm sparkling splashing streaming turbulence clan Glens grass heather highlands lochs moody scottish steam viaduct weather building buildings city harbour HDR moon Nyberg ocean office offices reflection skyline