From the Quarry Entrance Control Point, head into the quarry, hugging the left wall.
Look for an entrance on the wall that leads to a hallway with a forklift resting against a wall of blocks. (See the first image in the gallery above for the map location.)
Levitate your way through the top right of the block wall (or just throw the forklift at the block wall to destroy it), and you'll find yourself in an a large, vertical shaft. You’ll know you’re in the right place if you see a giant 02 written on the wall (also pictured in the gallery above).
In the 02 shaft, climb or levitate your way down to the moss-filled bottom, and you’ll discover this Hidden Location.
From the Quarry Entrance Control Point, head toward the quarry until you can make your first right. Keep moving forward until you see a pathway beneath the floating rocks.
Head through that path until you see a wall on right made up of large blocks. Levitate above them and enter the mold-infested room.
Control is full of secrets, mysteries and awful Hiss monsters that show up while you’re trying to explore the farthest reaches of the Oldest House. Tucked away inside the shifting Brutalist architecture are several Hidden Locations.This list will show you how to find them.