![](http://www.alamy.com/thumbs/6/40B88D42-D1BB-41D5-B919-2F713DC74CCA/2D885K8.jpg)
Mammatus or mammatocumulus clouds over Grand Teton National Park in Wyoming, USA.
Size: 3600px × 5400px
Photo credit: © Jon G. Fuller/VWPics / Alamy / Afripics
License: Licensed
Model Released: No
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