STEPHEN BURT / SCIENCE PHOTO LIBRARY STEPHEN BURT / SCIENCE PHOTO LIBRARY
Timelapse of cumulus humilis clouds forming, dissipating and moving across the sky in the afternoon in summer over a landscape seen from Walbury Hill (297 metres), the highest hill in Berkshire, UK. Filmed from 16:57 to 17:12 (15 minutes) on 14 August 2011.
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