In Amakumo Peak, players will encounter a massive crater filled with Electro Water and several Light-Up Tiles surrounding the area. All four sets of Tiles make up a single puzzle that acts as the key to getting rid of the dangerous water.
Start by heading to the area circled red on the map below, which indicates the location of the Light-Up Tile puzzle. As it's in the heart of Amakumo Peak, you'll need to complete Seirai Stormchasers: Part III to comfortably reach the area.
Once you're in the right place, you'll find the puzzle and a Stone Tablet. Interacting with it will give you a clue: And that which is different shall be illuminated all the same. This indicates that you need to reference existing Light-Up Tiles to figure out which have not been lit up.
To find the existing Tiles, head to the areas circled yellow on the map above. You'll find parts of a Light-Up Tile—all three of which will show you the areas not to light up again. This part is optional, as the solution is in the image below. When you're ready, head back to the first puzzle (circled red on the map above) to begin lighting it up.
Related: How to solve the Electro Seelie Stormstone puzzle in Shirikoro Peak | Genshin Impact
Simply step on the Tiles marked above to light them up and complete the puzzle. If unnecessary Tiles are lit up, the puzzle will fail. If you step on the wrong Tile on accident, simply step out and step on it again to turn it off.
Completing this puzzle will grant you an Exquisite Chest, unlock the Achievement Sea of Puzzles, and unlock the mechanism beside the puzzle. Interacting with the mechanism will drain the Electro Water and open up a path that leads further down the crater.
There are tons of Light-Up Tile puzzles on Seirai Island. Check out our guides on How to solve the Light-Up Tile puzzle in Koseki Village Genshin Impact and How to solve the Light-Up Tile puzzle north of “Seiraimaru” in Genshin Impact to help you solve them.
Nicki is a freelance writer with 5 years of writing experience. She's a fan of anything from HoYoverse, from Genshin Impact to Tears of Themis and Honkai: Star Rail. She also loves rhythm games like BanG Dream! and D4DJ.