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London

Prehistoric stone walls found under Lake Huron

Published

Divers examine boulders on the bottom of Lake Huron near Alpena, Mich., that were used as caribou drive lanes by prehistoric hunters in this June 13, 2011 file photo, provided by Thunder Bay National Marine Sanctuary via the University of Michigan News Service. (Thunder Bay National Marine Sanctuary / University of Michigan News Service / Tane Casserly)