Bear in mind that the idea of there being an ice wall somehow beyond Antarctica has many holes. For example, such an ice wall, to hold in the over 1.3 billion cubic kilometers of water contained in Earth's oceans, and the large volume of atmosphere, including storms and the like, would have to be over 80 kilometers high, more than the height of five Mount Everests. If Antarctica were an ice wall, or there were a wall anywhere near Antarctica, it would be seen with absolutely no difficulty.