I see.
"Inner Ice Wall" from what position of observer?
Some people believe that there is a Greater Ice Wall which sits tens or hundreds of thousands of miles beyond the Antarctic rim in the uncharted tundra of ice and snow. However, this wall is entirely hypothetical. Man has only been about two thousand miles inland of the Antarctic coast. No one has reported such a thing.
What exists beyond the antarctic rim is anyone's guess. How far the ice extends; how it terminates; and what exists beyond it, are questions to which no present human experience can reply. All we at present know is, that snow and hail, howling winds, and indescribable storms and hurricanes prevail; and that in every direction "human ingress is barred by unsealed escarpments of perpetual ice," extending farther than eye or telescope can penetrate, and becoming lost in gloom and darkness. Some even hold that the tundra of ice and snow stretches forever outwards eternally.