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CRREL Permafrost Tunnel 70 meters into winze
Alaska

CRREL Permafrost Tunnel, 70 meters into the adit. Visit http://permafrosttunnel.crrel.usace.army.mil/ for more information.

Copyright: Matt Nolan
Type: Spherical
Resolution: 11756x5878
Taken: 28/12/2009
上传: 02/01/2010
更新: 03/03/2015
观看次数:

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Tags: crrel; permafrost; tunnel; ice; fairbanks; ice wedge; mammoth; bones
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Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait. Approximately half of Alaska's 710,231 residents (as per the 2010 United States Census) live within the Anchorage metropolitan area. Alaska is the least densely populated state of the U.S.Source: http://en.wikipedia.org/wiki/Alaska