Black Rock Quarry Control Point. Claim the control point on your left. There is no control point in this area but there is one nearby.
Theres enemies in the middle you can fight if you wish or you can sprint and dash round the side of the quarry to avoid fighting. Be prepared for this battle because a. It looks like you have to enter through to the main area of the Quarry but luckily the game is lying.
All it does is levitate towards you and harm you that way.
There will be a forklift resting against a wall. At the Black Rock Quarry Entrance to the left above is a hole you can levitate up to. Use it to take the elevator up. Black Rock Quarry Entrance Hidden Location 1.