This is the most prominent flat earth map by Alexander Gleason published in 1892. It was made after many years of research, including what he learned from the captain of a ship who traveled around a section of the circular arctic ice boundary. Of course, no one knows exactly what the reality is of the world map, and we have no biblical, nor public knowledge of what is beyond the arctic boundary. All the governments of the world have conspired to keep all the citizens of the world away from this arctic boundary. I wonder why!
Let’s be clear about this maps relevance or usefulness. It is not useful, because no one really knows what the true map is. True flat earthers do NOT adopt this map or any map of the flat earth, because we don’t like to speculate about things for which we have no evidence.