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These mysterious cylindrical clouds over the Swiss Alps aren't natural... But, of course, scientists have no clues how they may have formed...
How did these eerie cylindrical clouds formed in the sky over the Eiger in the Swiss Alps? via
The eerie sky formation hovered over the Eiger, a 3,967-metre (13,015 ft) mountain of the Bernese Alps.
This picture shows the two mysterious cylindrical clouds in the sky over the Swiss Alps on March 10, 2021. via
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From 9NEWS on March 15 of overnight video footage taken in Fort Collins: