Did an ancient civilization once exist on Antarctica?

(INTELLIHUB) —  “Once the Turkish Navy’s advanced navigation tool,” the Piri Reis Map was “lost for over four centuries” before being rediscovered in 1929, according to Ancient Aliens TV.

The Piri Reis Map detail the Antarctic continents northern ridge and predates all other known drawings.

Shockingly yet even another map exists, crafted at a later date, which details rivers and lakes in Antarctica recently confirmed by satellite imagery to actually exist.

So was Antarctica transformed by earth changes at one point which led to the demise of an ancient culture?

Is this why the U.S. Navy traversed the icy region with a massive fleet of ships to in 1946 and 1947 during Operation High Jump?