Fumirole
From Halopedia, the Halo wiki
Fumirole was a human colony during the Insurrection.[1] Along with Hellas the colony was one of two on which Insurrectionists were known to utilize Rumbledrugs in a vainglorious attempt to fight Spartan-II's. Unencumbered by the body's normal safety limits, subjects were capable of feats of enormous strength, but the subsequent lack of control and mental instability together with the immediate physiological damage meant that users often died long before they ever laid hands on an actual Spartan. But not before doing tremendous damage to themselves and anything that got in their way.
The planet's status following the Human-Covenant War is unknown.
