Meltwater carves a canyon 150 feet deep in Greenland. Photo by James Balog. Taken from National Geographic’s Melt Zone article. Accompanying the article are a Photo Gallery and Interactive special.

Meltwater carves a canyon 150 feet deep in Greenland. Photo by James Balog.

Taken from National Geographic’s Melt Zone article. Accompanying the article are a Photo Gallery and Interactive special.

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