Matt Sturm of the US Army Corps of Engineers shows off the permafrost 15 meters below the surface from inside the research tunnel just outside Fairbanks, Alaska. One-hundred ten meters long, and 2.5 meters high, the Permafrost Research Tunnel was built between 1963 and 1965. The tunnel is now chilled to keep the permafrost intact.
KQED Climate Watch: Inside the Permafrost Research Tunnel - YouTube |
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| Science & Technology | Upload TimePublished on 20 Jun 2010 |
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