Education of the Mind: TIL the US-Canadian border is a deforested boundary line known as "The Slash". Constructed before GPS, the border actually zig-zags from the actual 49th parallel by as much as 295 ft on either side.

Sunday, July 16, 2017

TIL the US-Canadian border is a deforested boundary line known as "The Slash". Constructed before GPS, the border actually zig-zags from the actual 49th parallel by as much as 295 ft on either side.

http://ift.tt/2cCPcVM via /r/todayilearned http://ift.tt/2tY3MP6

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