Why have we never really seen a photograph of an ice wall? Even the most secured secrets of the World sometimes has its own photograph on the Internet -- or at least a footage.
They also said that Mars actually has an atmosphere -- that is, assuming that FEers believe that Mars does exist -- and the NASA kept this fact from the public. They have a photograph showing that the atmosphere is blue from the Landers, but they edited it to be orange and iron-oxide looking. Now, that secret is not my point here, but that secrets surely has clues, photographic clues, visual clues. In this case I am not talking about the Flat Earth, but about the Ice Wall you people claimed to be around.