After restoring the power on the right side of the complex, as shown in the previous section, follow the walkways all the way around to the far side of the room, to the door you just opened using the lever.
It also has yellow stripes and a high-voltage sign, but the pool below is not fenced off, and the underwater viewing port is intact.
Follow the hallway to the end. Press the button to open the door and enter the steamy room beyond.
On the far left, there's another security camera.
If you activate it, you'll get a grainy view of a small room with a pill bug mutant.
Use the switch on the right to call the lift. Enter the lift and press the button to descend.
As soon as the doors open, run out and shoot the pill bug mutant (1) before it can poison Lara. If it does manage to hit her with the pink toxin, use an antidote or large health pack.
Proceed through the door on the lower level, opposite the lift, into the underwater observation room.
This one is not flooded. Use the lever at the far end...
...to restore the power levels to 100%.
Return to the previous room.
Use the switch to call the lift.
Get in, press the button, and ride up.
Exit the lift, return through the steamy room, and follow the hallway.
At the end, press the button to re-open the door...
...to open the door and emerge back in the main area.
A brief cutscene draws our attention to a lever...
...a switch...
...and a ladder. So much for exploration and puzzle-solving. ;)
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