the tundra has no stability of its own, the grade's integrity relies on the ground remaining frozen. these heat pipes and sinks help keep the ground frozen. These are the newer of the two styles seen periodically along both sides of the line to Hudson's Bay. |
Date:
10/27/2007 |
Location:
Churchill, MB CA Map |
Views:
394 |
Collection Of:
John Radimecky |
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Author: John Radimecky
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Picture Categories: |
This picture is part of album: VIA's Hudson Bay |