In this guide, you will come to know how to get the Ion Cubes in Subnautica. You have to follow the step-by-step instructions in this guide to get them.
Starting from the coral tube sticking up out of the water, you will need to head northeast or about one bump to the left or right of northeast until you reach a large hole/cave entrance in the bulb zome.
You will need to have a prawn suit with a drill arm, but it is recommended to have a cyclops to bring the prawn suit down to the lava zone. You can also have a reinforced dive suit, a high or ultra capacity 02 tank, a sea glide, and extra power cells just in case.
The main threat you will encounter in the lava zone is the Sea Dragon Leviathan; you have to avoid them as best as you can, and the warper can warp you out of your vehicle unless you’re in the cyclops. If it does, you can either attack until it warps away or runs from it. You will also face the lava lizards, and you have to stay away from them.
There are also lava larvae in the lava zone; they will try to come near you and latch onto your vehicle and drain power from your vehicle. So you have to be aware of them and try to avoid them.
You will also need one blue tablet to access the second location.
Once you’ve gone into the entrance, your screen should start to turn greenish, meaning you are entering the lost river. You have to continue through until you reach a large hole that leads to the inactive lava zone. There is also a ghost leviathan near the hole, so you have to be careful as you go down the hole.
Once you’ve gone down the large hole, you have to continue into the inactive lava zone, and you have to find the lava castle and enter it. It will lead you to the thermal plant inside the lava castle.
Once you finish with the lava castle, you will need to look for a large hole in the ground, in the inactive lava zone. Then you have to go down and head south until you reach the primary containment facility.
