Lava Lakes

The Lava Lakes is a cave biome in Subnautica. It is located below the Inactive Lava Zone around 1300 to 1700 meters deep. Within the Lava Lakes the Primary Containment Facility can be found - this is where the Sea Emperor Leviathan is encountered. The Lava Lakes is currently the deepest biome as well as the hottest biome in Subnautica. This particular biome plays a major role in the story of Subnautica.

A sole Sea Dragon Leviathan roams the vast chamber.

Description
The Lava Lakes is much smaller than the Inactive Lava Zone, but has much more volcanic activity. Lava falls are a common sight in this biome, along with obsidian pillars and magma formations jutting from the walls and lakes. The Lava Lakes has a distinct orange fog. No flora can be found in this biome, presumably due to the extreme conditions.

Lava Lakes= The chamber consists of a huge lava lake, with occasional lava falls and masses of magma. Typically, a Sea Dragon Leviathan can be found guarding the lava lake. Towards the end of the lake, five cubic precursor structures can be found attached to obsidian mounds by cables. The purpose of these cubes are currently unknown. At the end of the lava lake, the Primary Containment Facility can be found.

Lava Falls= The Lava Falls can be found going from the Inactive Lava Zone above to the main chamber below. These large pits act as entrances to the Lava Lakes, and can be found near the Lava Castle. They also connect to the secondary entrance to the Lava Lakes, which can be found in a domed depression in the Inactive Lava Zone.

Trivia

 * The Lava Lakes was originally called the Active Lava Zone.