![](http://www.alamy.com/thumbs/6/C5006E9F-38DA-489C-A3A8-4F082DBB69F8/T56NTG.jpg)
Mammatus; mammatocumulus; "mammary cloudâ€; unusual cloud formations against clear cobalt blue sky; central Colorado, USA
Size: 6000px × 4000px
Location: Central Colorado, USA
Photo credit: © H. Mark Weidman Photography / Alamy / Afripics
License: Licensed
Model Released: No
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