Antarctica probably isn't that big. I've never measured it either, and one recent visitor applied a number to it that was greater than the circumference of the spherical earth, which was odd, but I suppose if you account for nooks and crannies it may be plausible. The spatial distortion person was me, and that's because I'm of the opinion that the earth is an infinite plane in a closed loop, which is strange and difficult to render in two dimensions but solves all this pesky whining about distances and the size of antarctica.