Black Rock Quarry Hidden Area. This marks the end of our Control Hidden Locations Guide. That might be one where you have to find some good upgrades to your gunsabilitys and come back when you are more powered up.
Use Levitazionw to get on the platforms and then follow the sewers until you find a door that leads back to the Furnace Chamber. Again you will need to have completed the mission Old Growth to get mould sporepoison gas immunity for this hidden area. At the entrance where the Astral Monster is there is a door in an above alcove.
Fly up break through and also enjoy another special collectible item while.
This whole way is to get you to that big area on left side of the map called Black Rock Quarry. The Quarry Threshold also known as the Black Rock Quarry is a Threshold located in the Maintenance Sector of the Oldest House. Black Rock Quarry Hidden Location. Use Levitate to climb the platforms and then follow the sewers until you find a door that leads you back to the Furnace Chamber.