When Sam and Gilly see the Wall, it was really important
that they be able to take in this immense structure that's been built.
We had to get the Wall a distance from them, but when we do see it,
it needed to be something amazing and dramatic.
But at the same time they need to find it.
It shouldn't have been right there in front of them the whole time.
What our visual effects supervisor, Joe Bauer, came up with was the idea
that it was the Wall built at the top of a hillside.
So there is a foreground forest
and deep in the forest, you look up a hill,
and then up above that is where the Wall sits.
BAUER: They look up through the tree branches,
you see a mountain in the distance,
and on top of that is the ice wall and it's reflecting the sunlight
and it's, you know, amazing.
They're, like, looking up, as opposed to, you know,
why didn't they see it when it was right there in front of them.
It's a pretty imposing structure.
So it was... Every scene, every angle,
really plays a role in how we design the looks of these things.