From Halopedia, the Halo wiki

Galgalia is a planet in an unknown star system. Early during the Human-Covenant War, the UNSC frigate Daedalus crashed on the surface of the planet. The wreckage of the Daedalus was later scavenged by the UNSC.[1]

Production notes[edit]

Thus far, Galgalia has been mentioned only in a brief promotional video for the M12 Force Application Vehicle's guest appearance in the third-party racing game Forza Motorsport 4. Therefore, its status as canon is unclear.