Underneath the Sphinx - East Gate - Second Hieroglyph Puzzle

Tomb Raider Last Revelation screenshot
This time, press the hieroglyph tiles in order from left to right: reeds, hill, bird.

Tomb Raider Last Revelation screenshot
The gate at the east end of the hall opens.

Tomb Raider Last Revelation screenshot
When you enter, the gate closes behind you. You'll need to kill 3 more bats between the gate and the deep pit.

Tomb Raider Last Revelation screenshot
Jump across the pit (using either a running jump and grab across the middle or a running or standing jump across either side) and continue up the slope to a small room with another hieroglyph puzzle.

Tomb Raider Last Revelation screenshot
Here, there are 9 tiles with symbols and 9 niches below. Again, I'm not sure about the logic of this one, but the solution is to reach into the 2 niches labeled with the mirror-image snake symbols: the rightmost niche on the north side, which opens the gate so you can exit...

Tomb Raider Last Revelation screenshot
...and the rightmost niche on the east side, which contains the STONE OF RE.

Tomb Raider Last Revelation screenshot
Every other niche releases a swarm of beetles, so avoid them. If you accidentally trigger the beetles, you'll need to jump across the pit and back to get rid of them.

Tomb Raider Last Revelation screenshot
Return across the deep pit and through the gate to the first HIEROGLYPH PUZZLE.

[Underneath the Sphinx Walkthrough]