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Published online by Cambridge University Press: 20 January 2017
In the past six years a number of pits dug into cobble-stone beaches of Lake Superior have been discovered. These are as much as four feet in depth and some are large enough to accommodate several people. They do not appear to have been roofed, and the small amount of animal bones, charcoal, potsherds, and other objects suggests that these pits were used as occasional shelters from the wind by Indians fishing through the ice on Lake Superior.