There is room to drive all the way back to within 100' or so of GZ, and to turn around easily. Again, I'd only try that in good weather and conditions.
This cache is a small plastic bottle about 2" wide and 7-8" long, hidden in the typical way. If you do drive back in here, there's a place to pull off and turn around about 100-150' or so from the road. But you'd probably be better off to pull in the 2-track on the west side of the road instead. That also has a place to turn around, and it's much easier to get in - and out of - than the east side.