If youre à completionnist it might take you almost 10h 
Me i hâte leaving such zone with things to do.
And thats crazy, i dont know if its part of thé plateau but I got à Little préview of thé cold part but you cant go There without à lot of food or stuff to keep you Warm.
Thé thing is youre not forced to follow the story so i guzsss you can go There éven before completing thé 4 shrines and head to thé donjon 
But I think ill just follow thé game , at least until the thé first donjon to see how Works the story to let you some freedom
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m







