I know it's a screenshot and I would not be surprised to see it in the middle of the map. However, when Todd said you'd be able to go anywhere you see, I do not take that to literally mean that you can step foot on every square meter of the game world. I expect there to be a lot of areas that you can't get to due to terrain. I take his comments more generally, meaning that you can reach the general areas. Given the steepness of those mountains, I expect a lot of it to be untraversable, except mostly on roads, paths, etc.
Yes, I took it to be a theoretical goanywhere. Like there are no innate barriers stopping you (besides the edge of the map), just natural terrain.