Rucco Maag Shrine is located in the east of Hyrule, in the Lanayru Tower area, southeast of Lanayru Tower.
To solve the puzzle, you need to activate the switches so that each flame lights up in the floating cube in the middle. It’s a rather complicated process so we made a video for you.
This is the arrangement written (all directions assume you are standing in front of the cube with the keys facing the water):
In front of me
After solving for the exit, stand in front of the fire near each pillar, and shoot an arrow through it. They will catch fire in the air, land on wooden pallets holding two treasure chests on the far wall, burn wood, and treasure chests will fall to the ground. The treasure on the left has opal, and the treasure on the right has a silver bow.
Now you can visit Rucco Maag, collect a spiritual orb and leave.