This book presents a plausible account of how thousands of tons of unusually pure copper ore from Michigan's Lake Superior was mined and shipped to Europe 4500 years ago, and how Stonehenge in England was used as an aid to navigation.
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This book presents a plausible account of how thousands of tons of unusually pure copper ore from Michigan's Lake Superior was mined and shipped to Europe 4500 years ago, and how Stonehenge in England was used as an aid to navigation.
Read Less