Mount Caubvik (known as Mont D'Iberville in Quebec) is a mountain located on the border between Labrador and Quebec in the Torngat Mountains. Mount Caubvik is the highest mountain in Canada, east of the Rocky Mountains. While not the highest mountain in eastern North America (Mount Mitchell, Mount Washington, Clingmans Dome, and Mount Rogers are higher), it is the highest point on the east coast of the continent.
Mount Caubvik is also hosts the highest points in both the provinces of Quebec and Newfoundland and Labrador, although the summit itself lies about 10 metres northeast of the provincial border and is entirely within Labrador.
Normally, this would not be much of an issue, there are probably many other peaks in the world where the exact high spot is not precisely on the watershed that marks a border, but in this case the name D'Iberville could be taken as offensive to those in Newfoundland. Therefore, strictly speaking, this is not a case of a single border peak having two names, but rather a case of two separate peaks. D'Iberville is about a foot lower than Caubvick and has a prominence of essentially zero, making it really just a shoulder and not even a sub-peak.
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