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The Toblerone line is a defensive line made of Dragon's teeth that was built in the 1930s near Gland, in the Canton of Vaud, Switzerland. Its purpose was to stop a tank invasion from the west. The big concrete blocks that make up the defences are similar to the shape of the chocolate bar "Toblerone", which gave its name to the line. Since the line has been left to nature since its construction, it was decided to keep these concrete blocks and to make a hiking trail along their route.
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