I'm lost. If there is an ice wall, how do we get to it? If we can't because the flat earth is infinite, how does the sun rise and set?
Not all FE'ers believe the same thing.
* Some say that there is a solid dome over the Earth - made of (maybe) ice - because the Bible says so.
* Some say that the land BEYOND the ice wall is infinite - but we can't get there because it's too cold and dark.
* Some say that the flat earth is NOT infinite - and has a high wall around it to stop the air and water from escaping.
* Doubtless, there are other variations.
MOST FE'ers believe that the sun moves around at a constant (or near-constant) height of 3,000 miles above the flat earth. A few have other ideas.
Some people believe that the ice wall is what we RE'ers would say is just the outer edge of antarctica. Some believe that there is a separate continent of antarctica AND an entirely separate ice wall that surrounds the outer rim of the world.
Some say that the interior of antarctica cannot be explored because it's too dark and too cold. Some say that the United Nations has ships, planes and drones that are tasked with preventing nosey people from going to the ice wall...they are oddly unspecific about how this is possible or why nobody who's been turned around by them has ever written about it.
100% of these ideas are utterly indefensible...some more than others.