Residents across the North of Scotland were stunned to see a rainbow cloud hanging above the sky on Wednesday evening.
First seen in Aberdeen yesterday, the iridescent cloud has been making its way northwards.
Now reports of the cloud are reaching as far as Dingwall.
They are known as nacreous clouds and are famous for their signature vivid colours.
A number of readers stopped to take in the scene, sharing their photos and the Press & Journal have put together a gallery to showcase the best snaps.
What causes nacreous clouds?
The clouds have a rainbow-like appearance because they reflect a thin layer of oil on top of water, a phenomenon known as iridescence.
The clouds are said to appear alongside very cold and often dry weather.
According to the Met Office, they are “very rare and high” formations which only tend to form over polar regions when the sun is just below the horizon.
Nacreous cloud photos
The forecaster said: “The ice particles that form nacreous clouds are much smaller than those that form more common clouds.
“These smaller particles scatter light in a different way, which is what creates the distinctive luminescent appearance.
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