The location can be reached from Kuwak Yaku and Lara has to have completed the Trial of the Jaguar.
There are moving parts of the tower (some of which can instantly kill Lara).
The task is to reach the top of the tower.
Start climbing and remember to avoid the moving parts of the mechanism.
In many places, you will have to perform perfect jumps in order not to die.
Another problematic spot is shown in the picture above.
Reach the wall shown above (you have to bounce off to reach the upper ledge).
Lara shall reach the climbing wall.
After you cling to it, lower yourself using the rope.
Get as low down as you could.
Start running on the wall, and swing left and right.
This will let you reach the next part of the wall, shown on the picture.
Climb up and you will find yourself next to a structure reminding a sail.
Stand next to it and aim the bow at the rope coil.
This will unlock the passage.
Part two - reaching the second sail
Get near the central, rotating construction.
Climb onto the beam, but avoid the moving parts.
You have to reach the rotating structure shown above.
Wait until it stops in a configuration that allows climbing and start going up.
Lara will notice a new sail behind a damaged wall, but won’t be able to break through.
Wait until it passes Lara, and only then reach the right hole shown on picture 2.
You will be near the second sail.
Stand next to the wooden structure and shoot the rope coil shown above.
You will hence destroy a part of the wooden structure.
Try hitting it with a rope arrow.
Lara will be able to pull it, opening the right passage for a short moment.
Reach the coil of ropes on the left of the sail.

Stand next to it and aim at the protruding lever (picture 1).
Now stand next to the other sail.
Now aim at the coil of ropes located in the center of the tower - as shown above.
it’s possible for you to now commence the last stage of climbing.
Climb onto it and jump into the center of the structure.
Use the beam to reach the two climbing walls shown on the picture.
Remember about using the ice axe with the right button.
Climb onto the highest beam and reach its end.
Lower yourself using the rope and start running on the wall.
You have to reach the edge on the right.
A part of the structure will start crumbling, but it’s a scripted part of the game.
Climb up and reach the exit.
There’s a new mural there, and the path leading to the Hidden City.
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