The Piri Reis map is a world map compiled in 1513 from military intelligence by the Ottoman admiral and cartographer Piri Reis.
Approximately one third of the map survives; it shows the western coasts of Europe and North Africa and the coast of Brazil with reasonable accuracy. Various Atlantic islands, including the Azores and Canary Islands, are depicted, as is the mythical island of Antillia and possibly Japan.
The historical importance of the map lies in its demonstration of the extent of exploration of the New World by approximately 1510, and in its claim to have used Columbus’s maps, otherwise lost, as a source. It used ten Arab sources, four Indian maps sourced from the Portuguese, and one map of Columbus. More recently, it has been the focus of pseudo historic claims for the pre-modern exploration of the Antarctic coast.
Surviving fragment of the Piri Reis map showing Central and South America shores. Source
The map was discovered accidentally on 9 October 1929, through the philological work of the German theologian Gustav Adolf Deissmann (1866–1937). He had been commissioned by the Turkish Ministry of Education to catalog the Topkapi Palace library’s non-Islamic items.
At Deissmann’s request to search the palace for old maps and charts, the director Halil Edhem (1861–1938) managed to find some disregarded bundles of material, which he handed over to Deissmann. Realizing that the map might be a unique find, Deissmann showed it to the orientalist Paul Kahle, who identified it as a map drawn by Piri Reis.
The discovery caused an international sensation, as it represented the only then known copy of a world map of Christopher Columbus (1451–1506), and was the only 16th-century map that showed South America in its proper longitudinal position in relation to Africa. Geographers had spent several centuries unsuccessfully searching for a “lost map of Columbus” that was supposedly drawn while he was in the West Indies.
After reading about the map’s discovery in The Illustrated London News, United States Secretary of State Henry L. Stimson contacted the United States Ambassador to Turkey Charles H. Sherrill and requested that an investigation be launched to find the Columbus source map, which he believed may have been in Turkey.
—READ MORE: https://www.thevintagenews.com/2016/08/11/the-mysterious-piri-reis-map-is-this-evidence-of-a-very-advanced-prehistoric-civilization/