Azores is originally shown to be covering an area some ten larger
than now providing probable evidence of subsidence and sea level
correct placing of the Azores in latitude and longitude on the
geometric grid suggests that the Piri Re'is map of the Azores
is of great antiquity. It may have been this very map
(in another version or copy) that led the Portuguese to the
discovery of the islands in 1431. It is unreasonable to suppose
that they could have mapped them in their correct positions
when they had no means of finding longitude and when graduated
sailing charts were not introduced until about the year 1500.
Even the Portuguese would hardly have drawn the islands with
so little regard to their present shapes.
Maps of the Ancient Sea Kings by Professor Charles Hapgood