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Mark’s Reviews > Secrets of the Viking Navigators: How the Vikings Used their Amazing Sunstones and other Techniques to Cross the Open Ocean > Status Update

Mark
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— Jun 02, 2026 07:27PM
Secrets of the Viking Navigators: How the Vikings Used their Amazing Sunstones and other Techniques to Cross the Open Ocean

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Mark
Mark is 16% done
— May 23, 2026 07:06PM
Secrets of the Viking Navigators: How the Vikings Used their Amazing Sunstones and other Techniques to Cross the Open Ocean


Mark
Mark is 12% done
— May 23, 2026 02:07PM
Secrets of the Viking Navigators: How the Vikings Used their Amazing Sunstones and other Techniques to Cross the Open Ocean


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