Climb onto the block you just raised with the switch.
Take a standing jump to grab the horizontal crevice. Traverse to the right, all the way around to the north wall...
...where you can pull up into a hallway.
Shoot the hollow bench to get a quiver of normal arrows. Go up the ramp to another small room with a scissor-blade trap in the doorway.
Open the sarcophagus to get the RIGHT GREAVE of the ARMOR OF HORUS.
Deal with the skeleton that rises out of the floor to the right. (You can blast it into the small pool if you like.)
Then exit carefully past the blades and return down the ramp.
Do not drop into the hallway near the barred window. If you do, just climb back up again. The only other way out is via either of two spiked hallways. If you use the MECHANICAL SCARAB a third time, it won't work again, and you will not be able to get the secret. Instead return along the greenery-lined hallway...
...and drop back into the ROOM WITH THE L-SHAPED PIT AND BARRED WINDOW.
Copyright © 1999- - Stellalune ( ). All rights reserved. The screenshots and videos included here were made using Bandicam and the classic Tomb Raider widescreen patch by Mr. Fourblack. Feel free to copy or print this walkthrough for personal use. By all means, share it with friends, but please include this credit line so people can send me their feedback. No part of this walkthrough may be reproduced on another site without permission.