The "Drunken Forest", black spruce near the Arctic tree line. These trees are tipping because the underlying permafrost is melting and refreezing throughout the seasons. During melt periods, the trees tip over.

Image ID: line5250, NOAA's America's Coastlines Collection
Location: Canada, Northwest Territories
Photo Date: 2010 September
Photographer: Dr. John Cloud, NOAA Central Library


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