This section may contain spoilers of the game (more information of the story about the Roaches to be added).
A castle with many constucts capable of using ice power. The constucts as well as the castle itself is created by the Roaches to guard the artifact.
In the room with four pressure plates and a crystal lamp you'll have to first turn the lamp on, place the frozen Krawlers onto the two panels on the south to collect the ancient key, and then place the ice cubes on the panels on the north and then turn off the lamp to open the door leading to the balcony of the castle.
- This area is likely inspired by the Dry Dry Ruins from Paper Mario. Both castles are in the center of the desert, and requires a key to be placed in a hole in an empty room to rise from the underground. They also have very similar parts, like corridors with direct views into the desert. In addition, both areas feature a room with several coffins.
- This area was revealed in 2018 October roundup.