The Piri Re’is Map is only one of several anomalous maps drawn in the 15th Century and earlier which appear to represent better information about the shape of the continents than should have been known at the time. Furthermore, this information appears to have been obtained at some distant time in the past.
Piri Re’is, Ptolomy (2nd Century A.D.), as well as Mercator and Oronteus Finaeus, well-known 15th Century map-makers, included the traditional southern continent in their world maps, as did others.
Antarctica was not discovered until the 19th Century, and it was largely unexplored until the middle of the 20th. This is just the start. Anomalous maps also show the Behring Strait as linking Asia and America, river deltas which appear much shorter than they do today, islands in the Aegean which haven’t been above water since the sea-level rise at the end of the ice-age and huge glaciers covering Britian and Scandinavia.
Long dismissed as attempts by cartographers to fill in empty spaces, some of the details of the old maps look very startling when correlated with modern (very mainstream) knowledge of the changes in the Earths’ geography in the geologic past, particularly during the Ice Ages
More evidence has appeared in recent years.. The Piri Re’is map is one of the cornerstones of the growing body of evidence for an unknown Ice Age civilization. Along with this we can include the book Hamlet’s Mill, by De Santillana and von Dechend (1969)