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Relax to Mesmerizing Aerial Views of Iceland’s ‘Glacial Flour’ Pulsing Through Waterways

Relax to Mesmerizing Aerial Views of Iceland’s ‘Glacial Flour’ Pulsing Through Waterways


As glaciers expand and recede, they have the capacity to grind rock so fine that geologists refer to the pulverized material as glacial flour. It slips down rivers and into lakes, carrying the otherworldly turquoise hue through a unique and resilient ecosystem. In Iceland, the blue-green color is complemented by rivers that flow yellow, thanks to sulfur from nearby volcanoes, or red from dissolved ferrous iron—also known as bog iron. Coursing over rock and black sand, the streams take on dazzling, rhythmic patterns. More
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