The South Pole was a map from the old version of FeralHeart, removed from the game as of the June 9th, 2016 update.
The portal to the South Pole was found in Lonely Cave, and could lead into Atlantis. This place had a bunch of hills and it snowed all the time. It was also known for getting characters lost.
There was pretty much no-one here, and it was useful for having packs that you didn't want to interact with others and start a flame war.
Glitches:
- Be wary of venturing too far away. You can get stuck and can only move sideways until you somehow get out or press "Home".