I'm not an FE proponent - but if I were, I'd probably say:
Obviously there are some normal pieces of land that lie against the ice wall (indeed these are clearly shown on the FE map on the Wiki) - so one would expect that if you landed there and marched inland, you'd eventually run into the ice wall...unless a UN patrol caught you trying...and then...
You know that's an interesting question!
I don't know what the FE folks claim would happen to you if the UN patrol catches you trying to get to the ice wall...we're told there are a patrols - but not what they do when you're caught. Do they politely say "Nothing to see here! Head back the way you came please!"...or do they "disappear" people into jail...maybe brainwash them into thinking that they spent three months at the South Polar Research Station - then let them go?
Does anyone here know?