Unsolved mystery of the 20th century: “Piri Reis Card”

The mystery of the mysterious Piri Reis map was not included in the series of articles about unsolved mysteries of the 20th century. We decided to correct this inaccuracy and tell you about this mysterious map. So, in 1929 a group of historians discovered an amazing map drawn on the skin of a gazelle. The study showed that this is an original document, drawn in 1513 by Piri Reis, the famous admiral of the 16th century Turkish fleet.
Unsolved mystery of the 20th century: “Piri Reis Card”
His passion was cartography, and his high rank in the naval forces of Turkey gave him privileged access to the Royal Library in Constantinople. Reis recognized in a series of records on the map that he had compiled and copied data from a large number of other maps, some of which dated to 4th century BC and even earlier.
The Piri Reis map shows the west coast of Africa, the east coast of South America, and the north coast of Antarctica – and the north coastal line of Antarctica is beautifully detailed. At the same time, the most surprising is not how Reis managed to draw such an accurate map of Antarctica 300 years before its discovery, but that this map shows the coastline with ice. Geological evidence indicates that the last time Queen Maud Land was free of ice four thousand years before our era. But official science says that the ice shell has been covering Antarctica for about a million years. The Piri Reis map clearly shows that the northern part of this continent was mapped even before it was covered with ice.
Further and more accurate studies showed that the last period, when the Antarctic was free of ice, ended about 6 thousand years ago. Today, there are still doubts as to when this ice-free period began, and its starting point is placed in the interval from 13 to 9 thousand years BC.
So the question is: Who mapped Queen Maud Land in Antarctica 6,000 years ago? What unknown civilization did we have the technology or the need to do?
It is well known that according to traditional history, the first human civilization appeared in the Middle East about 3000 years BC, followed by the Chinese and the Indus Valley civilization for a thousand years. Thus, none of the civilizations known to us could have done such work. So who was here for 4000 thousand years BC, who was able to do things that we can repeat just now and with the help of modern technology?