|This article is about the Inactive Lava Zone Corridor. If this is not what you are looking for, see Lava Zone (Disambiguation).|
The Inactive Lava Zone Corridor are mini-biomes which links the Lost River and Inactive Lava Zone together. There is only one known in the game, it is via the Tree Cove. The other entrance is located in the Mountains Corridor which leads directly to the Inactive Lava Zone and then to the Lava Castle.
The Inactive Lava Zone Corridors are characterized by large cavernous corridors of hardened lava. Veins of active lava can be found regularly, sometimes ejecting molten boulders. The Corridors continue well below all other biomes and converge into a central chamber. Resources such as Nickel Ore and Crystalline Sulfur are frequent in this biome which come in useful in the fabrication of certain vehicle upgrades.
- There was once an Inactive Lava Zone Corridor that lead to the Deep Grand Reef, this has since been removed in the Infected Update.
- There was once an Inactive Lava Zone Corridor that led to the Crash Zone, which was removed in the Ghost Update, and replaced with an Inactive Lava Zone Corridor located on the border between the Bulb Zone and the Mountains.