Hmm.. Maybe..A phenomenon of "full circle rainbow" appear in the skies over Malaysia on August 6, 2007.
Actually it wasn't really a rainbow at all but a rare optical illusion called a sundog.
These appear when the sun is low in the sky and its rays catch the thin vapor formed of ice crystals which lies in the atmosphere six miles above the Earth's surface.
The rays are refracted by the crystals to produce what looks like a halo round the sun.
Sometimes, as here, they display a spectrum of colors from red closest to the sun to a pale blue furthest from it, which has led to them being mistaken for full circle rainbows.
So where, you might wonder, would you find the crock of gold?
(That's what the myth says you will discover at the end of the rainbow).
But sadly for treasure-hunters, this one has no end. It is a perfect circle 
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