The Flat Earth is set on a flat non-moving stationary foundation (1 Samuel 2:8; 1 Chronicles 16:30; Psalms 93:1; Psalms 96: 9-11). All the continents center around the North Pole and are surrounded by Ocean. Surrounding the flat earth 360 degrees on all sides is Antarctica. It is also known as the Antarctic ice wall and has been measured at 200 ft high and and thousands of miles long. Captain Cook sailed along the ice wall for 60,000 miles and never found an inlet. Bet you never heard about that in your history books.
There are different opinions on what is above the flat earth, but the general flat earth belief is that the earth’s sky is surrounded by a sky dome the holds in the air and protects us. The Bible says it is made of glass (Job 37:18). The Bible clearly describes a firm dome (firmament) IN which the sun and moon were placed (Genesis 1:14-19).
There is actually real evidence of the dome. Edwin Hubble admitted in his book, The Observational Approach to Cosmolgy , that the observable Universe was small and curved all around us like a sky dome. He couldn’t explain it but ignored it like he did the evidence for Geocentrsm.