Sometimes, compared to an avalanche of snow sliding down a rockface, Icelandic fog waterfalls are a freak weather phenomenon caused by fog flowing from cold air into warm. When it meets warm air, the fog cascades downwards to sea level, giving the impression of a tumultuous waterfall. A keen wind adds an audio soundtrack to complete the illusion. It's so weird that Photoshop is often blamed, but fog waterfalls are no pour joke…

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