Distances in the South
From The Flat Earth Wiki
The Distances in the South is a topic of great interest to the Flat Earth Community, as its proposed models predict that the lines of latitude south of the equator will either converge or diverge. According to multiple-pole models with an Antarctic continent the lines will converge (See the Bi-Polar Model). According to the classic Monopole model the lines will diverge. This article focuses on evidence for the divergence of latitude lines in the South.
Sea Travel
Sea travel in the South may have been historically difficult.
Air Travel
There are several potential issues in analyzing air travel for accurately determining the geography of the earth under the various geographic models in discussion.