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Rare Upside Down Rainbow Photographed In Market Deeping, Lincolnshire (PICTURE)

27/06/2014 09:37 BST | Updated 27/06/2014 09:59 BST

Looking not unlike a smiley face, this upside rainbow made a rare appearance in the skies above Market Deeping, in Lincolnshire on Wednesday.

Known as a circumzenithal arc, the phenomena is similar in appearance to rainbows, but different in its formation.

The Met Office explains: “These are not rainbows but are examples of halos, formed by ice crystals high in the atmosphere.”

upside down rainbow

Mim Slater took this picture of a circumzenithal arc in Market Deeping on Wednesday

The inverted rainbow can only form when the sun is at an altitude lower than 32.2 degrees.

Mim Slater took the picture, describing the sight as “absolutely fantastic”.

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