User blog comment:Xenodrone98/If you can add any biome into subnautica collab/@comment-28435078-20160927161010/@comment-6020917-20160927164544

So this is like an extremely acidic versions of the Lost River, not entirely capped off like a cavern but more like a partially canopied trench? I like the acid though, especially with the idea of its condensing into the cracks - perhaps due to colder/warmer water differents?