How to get to the Alien Thermal Plant in Subnautica
First, you need to reach the Inactive Lava Zone. Then, locate the Lava Castle and find the entrance on its north side. Navigate carefully inside, and you'll find the Alien Thermal Plant.
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You actually want to head to the Lava Castle in the Inactive Lava Zone. There's an entrance on the north side. You'll need a Prawn Suit with a Drill Arm for this journey!
If you can't find it, look for the big Lava Castle in the Inactive Lava Zone. The entrance is on the north side.
It's simple. Head to the Inactive Lava Zone and locate the Lava Castle. Find the entrance, navigate inside, and boom – you're there.
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