If you decide this is a good spot for your base, you will be close to the wreck of the Mercury II. RELATED: Subnautica: Below Zero - How To Find Gold Best to build just a short distance away from the vents, not actually on top of them.ĭon't build in the deeper parts of the Purple Vents biome.there are Chelicerates that can quickly become annoying. This will deal damage to you even if you're inside your base. If you build really close to the Vents, there are some weird clipping issues that can happen, even in the game's full release. Keep an eye out for them if you want to utilize their energy for a base. There are other geothermal vents located throughout the waters of Below Zero. The Purple Vents are located to the east of Delta Island. The geothermal vents at the Purple Vents can be harvested with Thermal Generators, which basically gives you unlimited and consistent power for your base. Powering your base, particularly in the early game, can be a bit of a chore.