Sign up for CNN's Wonder Theory science newsletter.Explore the universe with news on fascinating discoveries, scientific advancements and more.Resting at the bottom of Mjsa, the largest lake in Norway, a shipwreck from hundreds of years ago is in almost perfect condition, frozen in time.The vessel, with its unique stem posts and overlapped planks, reveals a moment in the lake's maritime history and is estimated to date between the 1300s and 1800s.
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