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Ice wedges, common formations within permafrost, are visible in the Permafrost Tunnel. CRREL Permafrost Tunnel, Fox, Alaska.

Credit to Read: 
Photo by David Walker (PolarTREC 2019), Courtesy of ARCUS
Photographer: David Walker
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Image icon Download Walker_0404190928.jpg (19.01 MB)
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4.42mm
File Size: 
19930614
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image/jpeg
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5312
Width: 
2988
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LG Electronics
Model: 
VS986
Exposure Time: 
1/10s
ISO: 
1600

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