User blog comment:Atvelonis/E3 2018 Coverage and TES VI Teaser/@comment-1600847-20180611030716

The big question: in what province is it going to be set?

Screenshot: https://i.imgur.com/E7YoA5V.png

Based on the teaser, I say Valenwood is out since it's one huge forest and the teaser is mostly mountains and hills. same for Black Marsh as it's not a swamp.

I'm guessing High Rock or Hammerfell, with High Rock the most likely of the two since Bethesda would more likely showcase  Hammerfell's mostly desert terrain.

TES VI: High Rock? We'll see.