We know how tall the Ice Wall is because we've seen it. The composition of Antarctica had been studied by RE'ers and FE'ers alike.
I'm sorry, but you have not seen any ice wall, as it doesn't exist. If someone had seen it, they would have taken pictures or video, and it would have swept the world within a day. I am a person who needs proof to believe a claim. Please show your video or pictures of this ice wall that you and several other people have seen. I have several questions that I like to ask flat earth believers, and I've never received an answer for any of them, I'm always told "we haven't figured that out yet.
I have to say that this was a pretty bold statement for you to make, when you can't back it up with proof.
I did look at the video you have up. It shows part of the coast of Antarctica, and the thing is, it is curving the wrong way to be the outer wall around the entire globe? planet? plane? Whatever it is you call the earth. This can be circumnavigated in a short period of time by plane, and several days by boat. In fact there is a yearly boat race circumnavigating the south pole every year. My mother has been to Antarctica, and stood upon it, and was able to hike a bit of it. She has pictures as proof. This video would have to be months long, if not over a year, in order to follow it around the outer edge as you all claim. All your video proves is that there is a continent at the southern hemisphere of our globe.
So, tell me why the seasons are different in the southern hemisphere. Why do they see different stars? Why do they get 24 hours of sunlight in the summer and almost no sun in the winter, when the rest of the earth doesn't have this phenomenon. What holds the sun, or spotlight, or whatever you call it up? How does it travel? Why are other planets that we can see spherical? What causes the moons phases if it is nothing but a light? Please show pics of this "translucent" light that you guys keep claiming exists. What causes eclipses? There are so many things you guys deny or have no answers for, yet are unable to disprove our known science. Usually you just say things like "I can't believe that is how it works", or "that's just stupid". Not being able to understand something doesn't make it wrong.