Lost River | Subnautica Wiki | Fandom
The Lost River is a massive, frigid cave biome located deep under the surface and is further divided into seven distinct sub-biomes. There are four entrances to the Lost River. These entrances to the Lost River can be found in the Northern Blood Kelp Zone, the Deep Grand Reef, the border between the Mountains and the Bulb Zone, and the Blood Kelp Trench. …