|Crateria Kihunter Room||Adjacent rooms||West Ocean|
Sweetnumb made an image album detailing how to get the HBJ for the moat.
Twocat also has this video describing some of the nuances:
Spring Ball Jump
In randomizer, if you have Spring Ball, you can mid-air morph, bounce off of the missile platform, and land on the other side. It is technically possible to do this with Hi-Jump Boots, but significantly harder, so you'll likely want to turn them off before attempting this.