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Originally posted by Shadow Herder
Interesting map. It appears that North and South America was mapped while it was flooded. Florida, Hudson Bay, the Great lakes are all submerged. Half of the continent is submerged. Neat thing is that if you were to flood the earth thats what north america would look like.
California is an island.
To produce the work al-Idrisi interviewed experienced travelers individually and in groups on their knowledge of the world and compiled "only that part... on which there was complete agreement and seemed credible, excluding what was contradictory."