Ok, so prove to me how humans can land on the moon and send us back pictures of it, showing no ice wall.
Where did those pictures/video come from? Photos prove nothing, thanks to that wonderful evidence-faking tool we call Photoshop. Video is harder to fake, but it can still be done.
Also, If i walk in a straight line going west from Vancouver BC, where I live, shouldn't I reach the ice wall? Yet, I don't I go in a big circle back to where I came from...
I wish I could live in Vancouver >.<
In FET, the earth is a circular disc. Going west (taking readings from a compass, which relies on the North Pole) and rechecking your heading every five minutes
would result in you going in a circle. Get out a FET map that's centered on the North Pole and check it, you'll see what I mean.