Push the movable block and enter the area behind Natla's throne, as described in the main walkthrough.
But instead of using either of the 2 switches above the trapdoors, go all the way around to the right, behind Qualopec's throne.
There's a raised opening above, through which you would normally return to this room after navigating the traps below. Instead, stand on the low step behind Qualopec's throne. Face the back of the throne, sidestep to the left, then try to climb onto the block that forms the seat of the throne.
Lara can't stand there and will start to slip back, but before that happens, flip to the left to land in the opening above.
Drop down into the small room below and throw the switch to open the red door between the trapdoors in the THRONE ROOM.
Ignore the opening in the floor leading down into the trapped area. Climb back up the way you came.
Drop down behind Qualopec's throne and return to the area behind Tihocan's throne.
Go through the door you just opened, skipping the switches and trapdoors completely. Pick up the main walkthrough at the "SMALL ROOM WITH THREE INCUBATORS".
DARK MODE: Even with brightness adjusted, dark images on a light background can be hard to see. May I suggest a reputable dark mode browser extension, such as Dark Reader? (Download only from trusted sites, like darkreader.org or your browser's web store.)
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