Credit: WEATHERVIDEOHD.TV/SCIENCE PHOTO LIBRARY

Caption: Timelapse footage of mountain wave clouds underlit by the setting sun. The clouds are stationary as they form at the crests of standing waves set up as the air blows over mountains. Filmed in Colorado, USA, in autumn.

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Keywords: america, atmosphere, atmospheric, autumn, beautiful, beauty, clouds, color, colors, colour, colours, dusk, environment, evening, fall, meteorological, meteorology, mountain, mountains, north america, orange, pretty, red, rockies, rocky, sky, standing wave, sunset, timelapse, united states, us, usa, wave, waves, weather

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