Black Rock Quarry Hidden Area. Find the Black Rock Quarry Now you need to find the Black Rock Quarry. Levitate is required Its just after the Control Point enterance outside the elevator into the Black Rock Quarry.
Find the Black Rock Quarry in Control. Black Rock Processing is located in Central Maintenance but before heading there you can access some new areas with the Clearance Level 4 provided by Marshall. This is another mold-covered area so you need to have taken the pills from Dr.
After that its just being a floaty gurl.
Go straight passing the leftward path to the first hidden area. Use Levitate to access this area and follow the sewers to reach a door that leads to the Furnace Chamber. This is another mold-covered area so you need to have taken the pills from Dr. You can destroy the wall with a bit of.