In Genshin Impact, in the Erinnyes Forest, there is a puzzle with a Huge Shell that you need to solve to obtain a Precious Chest. To do this, you need to collect three Water Volume Detection Crystals and activate them. In this guide, we will explain in detail how to solve this puzzle, find the missing detection crystal, and pass through the Gloom Path to use the shell.

How to Find the Puzzle with the Huge Shell in Erinnyes Forest

The puzzle is located in Erinnyes Forest, on the slope between two Hilichurl camps. You can track the exact location using the map fragment below:

How to Solve the Puzzle with Three Water Volume Detection Crystals

In the specified location, you will come across a Huge Shell and two Water Volume Detection Crystals. To obtain the chest from the Shell, you need to find the third device, which will open when you solve the side puzzle on the right.

Interact with the mechanism, borrowing the Xenochromatic Ball Octopus skill, then apply it by holding it on the purple glowing flower nearby. If you perform this action correctly, the flower will start spinning around its axis, and floating platforms will appear nearby, which you need to run across.

After a few moments of spawning, they will become invisible, and you will need to pass them by memory and touch. The sequence of blocks is as follows:

• Three forward;
• Two left;
• Two forward;
• One left.

The reward will be a regular chest with a Detection Crystal inside. It will move to the Shell – hit the Hydro stone while simultaneously showering all three stones with local rain. In return, you will receive the Precious Chest.

Good luck in solving it!