Lantern effect? Old news.
The Lamp Passage is a small area accessible from the bumpy head in the Sea of Clouds.
The Lamp Passage is an area made of long purple paths spotted with red polka dots, spreading over what appears to be an enormous stained glass window. The paths are flanked with the titular lamps as well as other attractions that each mark the entrance to other worlds: green bells around the entrance to the Sea of Clouds, odd melon things with flashing bright green insides around the entrance to the Tan Desert, pink berries around the entrance to the green blocked passage, and question marks around the entrance to the blue blocked passage.
Starting from the entrance from the Sea of Clouds, the path forward is to travel up and around counterclockwise and then to travel south from the isolated island on the bed. This will lead the player to a large open section, home to two Chasers who will teleport you to the Flesh Paths World in an isolated area with a geisha head. The entrance to the Tan Desert is on the west side of this open area. Diverging from this path will lead the player either to one of the blocked paths or to another attraction, including a strange blue frog the player can chainsaw as well as a grinning blue ghost at the southernmost point of the world.