How to solve the Energy Extraction Device challenge in Yasna Monument in Genshin Impact

In the Yasna Monument, you will find an Eremite camp with an Energy Extraction Device that can be diffused using control keys. Reference the image below to find the exact location of the challenge. Since the area is swarming with enemy Eremites, be sure to bring a battle-ready team.

Once there, you’ll find a mechanism called an Energy Extraction Device. Approach it to start a challenge where you need to find two control keys to disable the device.

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In this part, you must find the two missing control keys in order to stop the energy extraction device. You can get them in any order.

Location of the first control key

Image by Professional Game Guides

There is a hole next to the energy extraction device. Jump to enter the building, where you will immediately see the first control key. After approaching the Key to claim it, exit the building following the path to the next room and then outside.

Location of the second control key

Image by Professional Game Guides

After leaving the first room, jump to find the entrance pictured above. Enter the room to immediately spot the second control key. After collecting it, defeat the Hermits and interact with the mechanism next to the door to open an exit.

After getting the two control keys, interact with the energy extraction device at the top of the building to start a combat segment. A circular gauge will appear above it. Your goal is to stand next to the device until the gauge above is full. If you are too far away or there are enemy disturbances, the gauge will stop filling up, so be sure to defeat any enemies that spawn and stand near the device afterwards. Once the gauge is full, the Energy Extraction Device will turn off, rewarding you with an Exquisite Chest.

Check out our guide on how to solve the Energy Extraction Device challenge south of Ancient Vanarana in Genshin Impact to solve a similar challenge in Sumeru.