Kaibikil was a large, floating artificial habitat, one of hundreds of biomes making up the Web of Worlds in the First Federation. It was located within the atmosphere of the class J gas giant Cherela.
In 2269, a fusion bomb launched from orbit by Dassik ships disabled the module's antigravity systems and it collapsed. Kaibikil was destroyed along with four other biomes during the assault. (TOS novel: The Face of the Unknown)