Assassin’s Creed Valhalla has recently received a massive expansion called the Dawn of Ragnarok. In this guide, we will tell you how to solve the Uldar Light Beam Puzzle in the game.
Uldar Light Beam Puzzle Guide

To find this puzzle, you need to head over to the town of Uldar located in the Gullnamar region of the map.

Once you reach there, go to Har Smida where you will need to enter a cave next to the lava flowing down from the mountains.

Interact with the light source surrounded by the pool of lava. Be careful to avoid the lava as it can set you on fire and decrease your health.

Now direct the light source towards the trapezoid-shaped structure located on top of the wall on the left side. This will open the door containing the book of knowledge in this region. You can then climb the staircase adjacent to it and enter the room at the end of the pathway to collect the Book of Knowledge in this region.
Doing this will grant you a melee ability called Rage Axe which can help you stun your enemies with a series of Axe attacks. You will also find some Silver and Opal in the room next to it.

Now you need to interact again with the light source and direct it towards the orb-shaped white structure on top of the door on the right side.This will unlock the door and allow you to read the note.

That’s it, you have now successfully solved the Uldar Light Beam Puzzle in the game!