Antarctica
Antartica is the name given to the southern polar region of the Earth.
There are two main theories concerning the nature and extent of Antarctica. The first and most widely accepted theory says that Antarctica is a continent surrounding the Earth, and that in his end there is a huge wall of ice (with a different size depending on the theory) which is the edge of the Earth. The second theory says that the center of the Earth's surface is the point where the Equator and the Prime Meridian meet, and therefore the Antarctic is a distinct continent located at the South. This theory also features a ocean edge, which is probably a waterfall.
Below are images of the two Flat Earth geographic models, which convey the different concepts of Antarctica within Flat Earth Theory:
