Atomfall: Unlock Sewer Tunnels Control & Maintenance Rooms

Q: Where to find Molly's Concrete Shelter Key in atomfall?

To access the Maintenance Room in Atomfall's Sewer Tunnels, you must first reach the Control Room via Casterfell Woods, find the Sewer Tunnel Key, and then use it to unlock the Maintenance Room door for a B.A.R.D. Crate.

Q: Is Molly's Concrete Shelter Key worth it in atomfall?

To access the Maintenance Room in Atomfall's Sewer Tunnels, you must first reach the Control Room via Casterfell Woods, find the Sewer Tunnel Key, and then use it to unlock the Maintenance Room door for a B.A.R.D. Crate.

Q: How to get into the Control Room in atomfall?

To access the Maintenance Room in Atomfall's Sewer Tunnels, you must first reach the Control Room via Casterfell Woods, find the Sewer Tunnel Key, and then use it to unlock the Maintenance Room door for a B.A.R.D. Crate.

Q: How to get into the Maintenance Room in atomfall?

To access the Maintenance Room in Atomfall's Sewer Tunnels, you must first reach the Control Room via Casterfell Woods, find the Sewer Tunnel Key, and then use it to unlock the Maintenance Room door for a B.A.R.D. Crate.

Q: What is in the Maintenance Room in atomfall?

To access the Maintenance Room in Atomfall's Sewer Tunnels, you must first reach the Control Room via Casterfell Woods, find the Sewer Tunnel Key, and then use it to unlock the Maintenance Room door for a B.A.R.D. Crate.

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Atomfall

Molly's Key, Control Room and Maintenance Room Doors: Sewer Tunnels

Learn how to access the Sewer Tunnels in Atomfall, find the Sewer Tunnel Key, and unlock the Maintenance Room for valuable loot. Includes Control Room access.

By teroqim·Originally published: September 2025·Updated 6 months ago·10 min read·Multi-source verified

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74 Metacritic ★★★★☆ 25 reviews

1 reading this guide

Molly's Key, Control Room and Maintenance Room Doors: Sewer Tunnels

Learn how to access the Sewer Tunnels in Atomfall, find the Sewer Tunnel Key, and unlock the Maintenance Room for valuable loot. Includes Control Room access.

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