On account of the cold, I guess. And of the tundra there, kind of difficult to build lots of stuff on it, such as roads or railways. The dark during winter-time

On account of the cold, I guess. And of the tundra there, kind of difficult to build lots of stuff on it, such as roads or railways. The dark during winter-time, too. All this to say that that makes it difficult to potentially set up big human settlements in there.