Load walls

Loading zones are planes that change the current chunk.

Leftover loading zones
about the nature of these loading zones, they might actually be used by the game.

Any%
A leftover loading zone is used to go from Iceberg Lab's  to Twinsanity Island's   (see Dimension Skip).

Other leftover loading zones

 * A loading zone going from Twinsanity Island's  to Iceberg Lab's.