Lava Reef Zone was used by the Dark Egg Legion as a hiding place during their resistance of the Dingo Regime under Kage Von Stryker's rule. When Sonic, Knuckles, and the Chaotix went to free Locke from captivity, they encoutered the Dark Legion in the Lava Reef. After a short battle was broken up by Lara-Le, the Dark Legion, Chaotix, and Sonic left the Lava Reef via a portal ring to arrive in the Hidden Palace Zone. (StH: #138,)