Black Rock Quarry Control Point. Go to this location and Levitate all the way to the big tower of the power plant. Along the way take another checkpoint.
After that go straight towards the Black Rock Quarry. New comments cannot be. From the Black Rock Quarry Entrance head to the tunnel on the left.
Find the Black Rock Quarry.
This would lead you to a mold-infested area. This place has a large elevator shaft - jump into it and help yourself with levitation so you wont get killed by fall damage. Follow the metal bridge to the Black Rock Quarry. When youre ready keep heading towards the Black Rock Quarry.