Very pretty, isolated spot. 

Google will tell you to drive in from North - this won't get you to the CG. You gotta approach from the South. 

You MUST have a high-clearance 4x4. The worst stretch of road is narrow with steep wall on one side and steep drop on the other. You will not be able to turn around.

TIP: From turn onto Keeps Mill road at hwy 216, set your trip odo and drive in and stop at mile 2.7. Then get out of your vehicle and continue on foot so that you can check out the road. There are big rocks, ruts, and lots of off camber. If you are in a raised 4x4 or on a dirt-bike, you'll be fine.