Motos Factory | Spooky unused area

The "Motos Factory" romhack has an interesting and spooky area that goes unused...
It seems to be an early version of Deadly Descent that would later apprear in B3313, but in this hack the area seems to be themed around Unsettling Maze.
To get to this area, you have to use some sort of cheat to warp to any area in the game, for example with the Star Manager software.
This area is in Castle Grounds, Area ID 6.
Warp ID 10 will work.