Mercator envisions as a large black rock, the Rupes Nigra, surrounded by a great whirlpool into which four powerful rapid rivers flow. These rivers divide a massive continent-sized landmass into four distinct islands or countries. When the English polymath John Dee wrote to Mercator asking about his sources for this map, Mercator returned the following letter which survives in his own hand:
In the midst of the four countries is a Whirl-pool, into which there empty these four in-drawing Seas which divide the North. And the water rushes round and descends into the Earth just as if one were pouring it through a filter funnel. It is four degrees wide on every side of the Pole, that is to say eight degrees altogether. Except that right under the Pole there lies a bare Rock in the midst of the Sea. Its circumference is almost 33 French miles, and it is all of magnetic Stone (…)
Flat Earth World Maps & Poster Printing is available in a wide range of sizes, from the compact A3 to the massive giant 5f/t! Our prints will stand bright on durable 220 or heavy duty 400mic weatherproof PVC, while for indoor placement, thick 350gsm silk/velvet/gloss paper also available.