I'm sorry, I should have started my argument in a better way. Poorly worded. I am suggesting that antarctica has to be an actual continent which can be circumnavigated, a giant island, so to speak. It is of course obvious that there are glaciers at the edge of this continent, everyone who has gone there has seen it. I am suggesting that the ice wall that you say borders the edge of the world is well know to have weather stations scattered all over the continent, and one can travel from one to the other to reach the far side of where ever one travels from, using a compass. This means that antarctica simply cannot represent the beginning of the edge of the world. All of the coastal stations are too close to one another to be scattered all around the edge of the world (assuming that this edge totally surrounds the world). If this were so, it would add thousands of miles between stations that actually are hundreds of miles apart. I wish that I could draw this picture so that my point could be made more clearly.
So, if antarctica is a land entirely surrounded by water as all of the other continents are, then the real edge of the world have to be somewhere else. I am asking that if this somewhere else ice wall is surrounding the whole disc world, why has it not yet been found by ships, etc? The antarctic ice shelf has little breaks here and there that allow people to dock ships etc, to gain access to the research stations.