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An archaeologist in Sweden spent three years traveling in vessels built like those from 1,000 years ago. He discovered lost sea routes, hidden trade harbors and new respect for Viking seamanship.

By Franz Lidz

Late in the summer of 2021, Greer Jarrett set out on the first of 26 voyages to retrace the maritime paths taken by Norse sailors during the Viking Age, which lasted from roughly A.D. 800 to 1050. The Vikings, beyond their reputation as medieval bad boys — Pillage People, if you will — were accomplished traders who established commercial routes that stretched all the way to Baghdad. Their primacy relied on mastery of the seas.