Stock photography, photos: Sunset over reservoir Stock photos of Setting sun over reservoir with walkers silhouetted against skyline Photograph: © Alan Oliver Click for a larger image and more information Keywords associated with this stock photo: reservoir, water, supply, lake, loch, calm, flat, reflection, sun, sunset, setting, dusk, twilight, orange, glow, scenic, landscape, walker, stroll, amble, people, couple, relax, calming, calm, serene, serenity,