The alien observatory door in Subnautica 2 is fairly close to the Alien Ruins biome/marker, which is a key objective once you ...
Opening the Observatory near Subnautica 2's Alien Ruins requires you to activate the generator in the area first.
Conduit Crystals are a late-game Subnautica 2 upgrade material that are necessary if you want to unlock the secrets of the alien plant.
All Out Action on MSN
The arrival (1996): When the power plant is actually an alien base
A key scene where a power plant is revealed to be an alien facility.
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