so what happens when you climb over this antartica ice wall?
You move from the land masses we know to a Dinosaur filled land area. My theory is the earth isn't a disc but multiple "lands" that are corrected via several ice walls. We find dinosaur bones here because of a great warming of the ice wall, which caused it to melt enough for the large reptiles to make their way here. Once here, they couldn't adjust to the climate and died out.
That is my theory and if you think i'm wrong, then prove it. This theory is about as sane as a flat earth one.