Wolfland
Wolfland was an area in Season 1 owned by Unnatwain. It is known for having a giant hole that they dug into it for unknown reasons. It's uncertain whether Wolfland was a continent or a country or a non-political territory as the lines between the three were most often blurred in Season 1. Given the hole's rugged landscape, it is likely to have been unfinished.
The overworld Great Ice Bridge passed above the hole in order to connect Cuba and an intersection between the Artipelago and a mining area.