The following sequence is also shown in a short video walkthrough.

After climbing back to the top of the ROOM WITH HINGED LEDGES, as shown in part 1, climb into the passageway at the right end of the walkway (above switch #5). There you'll find switch #6.

This switch opens the door below the SECOND BRIDGE, way back in the area where you killed the first two giant mutants. This door is timed to close after 2 minutes, so you have to hustle. Here's the sequence:

If you already pulled the switch, just wait out the 2 minutes until the door closes and the switch returns to the up position. Make sure Lara's health bar is at least half full and save the game. Then pull switch #6 to open the secret door. Quickly press Look to get Lara's perspective back if necessary. Roll...

...and run out of the alcove.

As you land on the walkway below the raised block, side flip to the right...

...to land on ledge D, below.

Side flip to the right again...

...to land on the rectangular stone ledge near the doorway. Then jump forward...

...to land in the doorway, losing a little health in the process. Turn right and run through the big double doors.

NOTE: To get down to the floor without any health loss, try either of the alternatives shown on this separate page. Then continue with part 3.

[Part 1 | Part 3 | Return to the Lost City of Tinnos Walkthrough]