Jamtska
Jamtska is an Indo-European language spoken in Sweden. Glottolog rates it shifting.
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Jämtland dialects, or Jamtish (endonym: jamska [ˈjâmskɐ᷈]; Swedish: jämtska, jämtmål), are a group of North Germanic dialects spoken in the Swedish province of Jämtland. In the eastern part of Jämtland the dialects are transitional to those of Ångermanland. The dialect group is commonly regarded and treated as a single entity. The Glottolog project considers it a language separate from Swedish, placing it closest to Norrlandic.
The dialects share many characteristics with Trøndersk — the dialect spoken to the west in Norwegian Trøndelag, and has historically sometimes been considered to be Norwegian in origin. The current view in Scandinavian dialectology, however, is that they belong in either the East or West Scandinavian branch.
From Wikipedia · Jämtland dialects · CC BY-SA 4.0