The Sunken Treasure Chest is a side quest in The Witcher 3. It is located in a dilapidated red brick building in the southwest of Fike Island. Find notes on the corpses in the building and follow the notes to the bottom of the underwater ruins. , two treasure chests can be found. You can first use your senses on the water surface to find the treasure chest hidden under the water.
1. Follow the task prompts to the map location, go to the southwest of Feike Island, and find a dilapidated building made of red bricks in the southwest of Feike Island.
If you want to get to this island, you can only swim across it from Fike Island. There is only a ruin on the island.
2. After entering the ruins, a group of water ghosts will appear. After killing them all, you will see a letter on the corpse on the ground. After reading it, the plot will be triggered.
3. You will find a corpse in this dilapidated red brick building. On the corpse you can find a blood-stained note, which says that there is a treasure chest hidden in the underwater ruins.
4. Water ghosts will appear when you dive into the water. Use the crossbow to deal with them.
Dive to the deepest depths. You will find 2 treasure chests, one of which contains a large number of blueprints and manuscripts, and the other is locked and contains the orange silver sword-Desven.
You can first use your senses on the water surface to find the treasure chest hidden under the water.
