![](http://www.alamy.com/thumbs/6/5963E037-5B48-4400-AAC6-98E2D7E4CED1/P1XMMB.jpg)
Mammatus clouds formation in a dramatic dark sky
Size: 4272px × 2403px
Photo credit: © Germano Poli / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: abstract, atmosphere, background, climate, cloud, clouds, cloudscape, cloudy, dark, disturbance, dramatic, formation, gray, landscape, mammatocumulus, mammatus, meteorology, nature, ominous, outdoor, overcast, phenomenon, scary, sky, storm, stormy, summer, threatening, thunderstorm, unstable, unusual, view, weather