The Kaska or Kaska Dena are a First Nations people living mainly in northern British Columbia and the southeastern Yukon in Canada. The Kaska language originally spoken by the Kaska's an Athabaskan language. Kaska Dena communities and First Nations include: Ross River, Yukon (Ross River Dena Council) Watson Lake, Yukon and Upper Liard, Yukon (Liard River First Nation) Good Hope Lake, British Columbia (Dease River First Nation) Lower Post, British Columbia near Watson Lake (Lower Post First Na… (More on Kaska)