Chatan

Chatan was once considered by the Covenant as a paradise world having been the home to nearly all of the Covenant races at one point or another. When a local Covenant patrol responded to distress signals originating from Chatan, all they found were scorched from weapons fire from an unknown source. Since the death of the millions of residence, Chatan was quarantined by the Covenant.
After the dissolution of the Covenant Empire, Chatan was claimed by The Forsaken and was later designated to be used as a planetwide mining operation to claim those resources that reside on the planet due to the hazardous environment no longer supporting life.