Discovery of map, by turkish officials, around 1929. Nice to know they signed the non aggression pact with germans, around that time. So looking at the modern view of the Piri Reis map, we can clearly see that it contains a landmass.
The map itself has been torn in two from XIII, and that is to the east where africa, and possibly where the rest of this unknown landmass would be. It is also good to note that the nazi secret base was located in this part of Antarctica.
Source 1 says this map, was actually created from ancient maps from times of Alexander with "two horns" referring to times of Alexander the great, almost two millennia ago!
Source 1:
http://www.sacred-texts.com/piri/pirikey.htm#IV
[NOTE: The fact that half of each of these lines is missing is the clearest proof of the map's having been torn in two.
VI. This section shows in what way this map was drawn. In this century there is no map like this map in anyone's possession. The--hand of this poor man has drawn it and now it is constructed. From about twenty charts and Mappae Mundi--these are charts drawn in the days of Alexander, Lord of the Two Horns, which show the inhabited quarter of the world; the Arabs name these charts Jaferiye--from eight Jaferiyes of that kind and one Arabic map of Hind, and from the maps just drawn by four Portuguese which show the countries of Hind, Sind and China geometrically drawn, and also from a map drawn by Colombo in the western region I have extracted it. By reducing all these maps to one scale this final form was arrived at. So that the present map is as correct and reliable for the Seven Seas as the map of these our countries is considered correct and reliable by seamen
Source 2:
https://en.wikipedia.org/wiki/German%E2%80%93Turkish_Non-Aggression_Pact
Source 3:
https://en.wikipedia.org/wiki/New_Swabia
What lies in Antarctica, you will not truly know. I can only ask, how was https://phys.org/news/2016-07-lab-titanium-gold-alloy-harder-steels.html discovered?
Look at the giant clad in gold armour, peculiar how we find a technologically advanced alloy that our human minds might have not able to understand, I believe we are not at that point, we are harvesting tech from Antarctica,.
If this theory proves correct, I will be very proud of my human self.