For the attraction that inspired the location, see Mine Train Through Nature's Wonderland
Rainbow Caverns is one of the areas in the Wasteland. It first appeared in Epic Mickey 2: The Power of Two. It was one of the first attractions built in Wasteland and according to Gremlin Gus, the caverns were not built by Oswald. It seems that no one in Wasteland knows how they were formed. It is based mostly on Mine Train through Nature's Wonderland, though its name can clearly be attributed to the Rainbow Caverns Mine Train attraction.
The caverns are full of railway tracks, overturned minecarts and also cave paintings related to Snow White and the Seven Dwarfs. The entrance is guarded by an Eye. The caverns contain an invisible inkwell and an indelible inkwell. Through a door with Snow White and the Prince lies the projector substation, which has been sabotaged by Gremlin Prescott. The Rainbow Falls is a facade based on the Seven Dwarves, with each appearing in this order: Sneezy, Grumpy, Doc, Sleepy, Happy, Dopey and Bashful. From there, one can see the Angel and Devil Caverns, which lead to Disney Gulch.
The Devil Caverns serve as a means of central heating to Wasteland, while the Angel Caverns pay homage to the Angel and the Seven Sisters.