angles appearance background beams below beneath bridge concrete deck girders light lower lower-deck perspectives piers pillars reflections secure solid steel strength strong structure structures surface surfaced surfaces texture textured textures thick under undercover water blue calm clouds horizon lake mirror nature ocean reflection sea sky wave color colour cool cooling edge lakeside lighting mirrored natural-environment natural-landscape nature-reserve outdoors outside park peaceful placid pond protection public reeds reflecting restful ripples rippling shade shadows sunlight sunshine tranquil tranquility trees vegetation water's-edge autumn serene silence silent summer waves wiev green meteorology ripple wheather wind dew drop droplet drops fresh glass illustration liquid rain shiny transparent wet