How to solve the Energy Extraction Device challenge south of Ancient Vanarana in Genshin Impact

Near the teleport point south of Old Vanarana, you’ll 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.

Related: Genshin Impact Until Vana Is Healed World Quest Guide

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

Location of the first control key

Head to the small building in front of the energy extraction device and interact with the switch to open the door, allowing you to enter the room. Once inside, approach the first control key to get it. A common chest will also appear to the left of the control key. Don’t forget to search it!

Location of the second control key

Head to the larger building behind the energy extraction device. You will notice that part of the building is cracked (photo above). Enter the crack to find the second control key, which you must approach to obtain.

Location of the third control key

In the same room where you found the second control key, look up to find a hole in the ceiling. Enter the hole to find the third control key. After approaching him, the doors to the room will unlock, allowing you to exit.

After getting the two control keys, interact with the energy extraction device at the top of the building to start a battle 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 complete the Energy Extraction Device challenge at Gandha Hill in Genshin Impact to complete a similar challenge in another part of Sumeru.