Breathtaking images capture river of fog filling the Grand Canyon in weather phenomenon that happens just once every DECADE

• Friday morning, the gorges of the Grand Canyon were filled with fog in a rare temperature inversion
• A temperature inversion happens when hot air high up acts as a seal to keep cold air pollution and fog trapped below
• While inversions happen once or twice a year at the Grand Canyon, a full inversion is more unusual, happening closer to every 10 years
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• Daily Mail

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