Grunt Homeworld

Balaho is the planet from which all of the Covenant Unggoy (Grunt) race originally migrated from.

"Ancient stepping-stones" of Forerunner creation can be found on this planet. There intended purpose is unclear. According to a comment here, the stones are also mentioned in one of the novels.

Topology and Climatology
The Grunt Homeworld, Balaho (star,position: Tala IV), is a planet with an atmosphere of methane. It is covered in a largely opaque layer of clouds, which prevents much of its surface from being seen from space. Alot of parts of the planets surface is covered in polar ice caps, but the parts of the surface that aren't covered in polar ice caps or free water are brackish tidal flats with naturally occuring pillars of fire. Balaho is still in the process of recovering from preactivation environmental collapse due to massive global overindustrialization. Balaho has two natural satellites, Buwan and Padpad. The gravity is approximately .709 G.

It should be noted that the Grunt Homeworld may not necessarily be one uniform biome or temperature like stereotypically conceived in science fiction. Most known worlds are different biomes existing adjacently with respect to each other.

Atmosphere
The atmosphere is 5.7 atm (CO2, CH4, He) which has been noted to be necessary for Grunt life, possibly even cellular respiration.