Tomb Raider: Underworld - Full Walkthrough

Chapter 4| Southern Mexico

- Ride the bike down the obvious path until the cut-scene shows you an object through a window of a stone temple.

  1. Line up the two outer rings so the black sections face away from Lara towards the middle of the open area, using the central lever. A clunk noise will be heard when this is done.
  2. Now use the skull lever to disengage the smallest central stone circle (push the column as far left as it will go). This will also move the outer ring.
  3. Line up the middle ring with the second largest ring, which will still be in position.
  4. Finally, return the outer ring to its position by pushing the skull lever back into position again. You'll need to do the exact same thing again on another Calendar which is in the structure opposite you.

Cut-scene.

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Cut-scene.