Find the Blood of Lathander Puzzle in Baldur’s Gate 3

Travel to the Mountain Pass region by crossing a bridge in the far northwestern part of the Wilderness map.

Head northwest from the Trielta Crags waypoint (a marker on your map you've manually placed as a destination) to find the Rosymorn Monastery.

The main entrance doors are locked and cannot be picked. Look left (west) of the entrance for Knotted Roots above some boxes. Interact with these roots to climb to a balcony and enter the monastery.

Once inside, head north on the balcony, then turn right (east) towards a wooden barricade. Ignore the room to your left with a Stained-Glass Window for now.

Continue east, jump over a gap with tree roots, turn right (south), and go through the door to your left (east). Do not go through the Enchanted Door.

In the next room with broken stairs and a talking bust, go down and beyond the bust, turning north.

At the bottom of the last set of stairs, turn left (west) and destroy the barricade with a fire-based spell or a bludgeoning weapon.

On the other side of the barricade, look left (south) to find a skeleton at the top of the stairs with a Rusty Mace next to it. Pick up the Rusty Mace.

Go back down the stairs and through the door to the north to reach the central chamber. You can interact with the main entrance doors now to make future entry easier.

Locate the Holy Blood of Lathander plaque beneath the large statue opposite the main entrance doors to start the Find the Blood of Lathander quest.

Return to the room with the Stained-Glass Window (left/north of the gap in the ground with tree roots). This is where the puzzle is located.

The puzzle requires placing specific ceremonial weapons on four pedestals surrounding the Stained-Glass Window. The correct placements are:

• Northwest Pedestal: Ceremonial Longsword (already in place, associated with Dawnmaster Welkinglory).

Southeast Pedestal: Rusty Mace (found earlier) or another mace/bludgeoning weapon.

Northeast Pedestal: Ceremonial Warhammer (associated with Dawnmaster Seed).

Southwest Pedestal: Ceremonial Battleaxe (associated with Dawnmaster Vaseid).

Interact with the Stained-Glass Window to see depictions of the Dawnmasters and their associated weapons.