This man is standing on the U.S. / Canadian border on a minor mountain range. The image faces north, with British Columbia in the background. The border is 8,891 kilometres (5,525 miles) long… and a lot of it is like this. In one place in Yukon Territory, it is 18,000 feet above sea level and surrounded by hundreds of miles of glaciers. A temperature of −77.5 °C (−107.5 °F) has been recorded there. A long portion cuts through the middle of the Great Lakes, and bisects Niagara Falls. In the older, eastern portions it passes through the middle of small towns. In one case, it cuts diagonally through a public library, indicated by a black line painted on the floor. The book check-in and check-out are in different countries.
