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How Industrial-Scale Tar Production Powered the Viking Age
- timonoko 8y ago"There were two kinds of Tar Pits: Mounds with ducts and underground funnel-shapes with container in bottom": https://fi.wikipedia.org/wiki/Tervahauta https://fi.wikipedia.org/wiki/Tervahauta But then again the Uppland area was populated with Finnish people pre 1000AD. Swedish scientist make these amazing discoveries frequently. One was rune-scroll with "magical language of unknown origin". When read phonetically at some convention, some random visitor from Finland recognized the language.