Can’t say I’ve ever seen this before. Reddit user ZormLeahcim snapped this photo of a strange cloud with two very straight edges. The photo was taken on 29 November at 2:30 ET at Hanscom AFB in Bedford, Massachusetts.

If anyone can explain this phenomenon please let us know in the comments so we can update the post accordingly. If you love interesting clouds, be sure to check out our previous cloud posts on the Sifter!