Remember the "ice wall" is just a theory, in no way does this wall hold back the Earth;s oceans.
If Antarctica was the rim, its the rock beneath it not the ice that holds back the water.
Until a continuous 150 ft wall of ice, 60,000 km long has been discovered it will only remain a theory.
What makes much more sense, especially to a Zetetic is that Antarctica is a separate continent.
And thanks to Master Willmore, that will soon become the "mainstream" theory.