Lava Lakes

The Active Lava Zone is an in-development biome. It is presumably where the Sea Emperor is being held.^{[Citation needed]} A precursor Seabase will be present in this biome.^{[Citation needed]} 

The Active Lava Zone will be smaller than the Inactive Lava Zone.^{[Citation needed]}

Lava lakes and lava falls are a common sight in this biome, along with obsidian pillars, and rock formations. 

Sea Emperor Prison

The Sea Emperor Prison is an in-development location within the Active Lava Zone. It is hinted that the Sea Emperor will be imprisoned in this area.^{[Citation needed]}