The Orrery - Planetarium Puzzle (Part 3)

Before jumping back over to the orrery, take a little detour into the passageway to the south.

This dead-ends in a small room with a mural (1/1), Entombed from the Byzantine Inscriptions series.

Return to the main room and stand on the wooden ramp to the left of the accordion mechanism. Wait for either set of grapple rings to swing around toward you.

Then swing across to the central platform.

Move to the edge of the circular platform nearest the armature with both grapple rings and a wooden board.

Wait for the wooden board to rotate toward you and then jump to grab it. Climb onto the beam above.

As the armature rotates with Lara standing on top of it, turn around so she's facing the end of the beam.

Wait for one end of the armature with the 2 dangling cross-bars to spin toward you and jump to grab the bar.

Hang on as the armature spins around.

When Lara is hanging directly above the next metal beam, she'll yell, "Now!" Let go at that moment to drop and land on the beam.

Walk to either end of this beam. Wait until the wooden board spins around toward you and jump onto it. Climb onto the beam above.

Turn around to face the end of the beam and ride it around as it rotates.

This last jump is a tricky one. Stand at the end of the beam and wait for it to spin around toward the central shaft.

Then jump forward, holding the Jump button for maximum air time. Lara should then grab onto one of the handholds.

Climb up and around to the right.

Jump to grab the white bar above and then climb on top of the orrery.

Walk out onto either of the catwalks.

As the machine continues to rotate, and the catwalk lines up with the room to the east, Jump into the doorway.