Since a bro scouted it out not myself I can't turn the whole "Mud CRew" Onto it but I would be happy to hand out (In Person) a detailed Topo of the approach to the "Stealth Bivy". I can say it is off of the Arro Seco? exit just South of Pinnacles. Roughly 8.5 miles East of the exit. I stress "Stealth" due to insufficient cover for large vehicles! Yet close and comfy for those overnights!. Pretty much anything off of Arro SEco is fair game, this one is good B/C I believe it is not private property! Don't hold me to it!
P.S. you have to climb at pinnacles to enjoy the bivy! So no more "Oh sadly only once" Remember to train hard during Granite season so you can hit the Pinns hard in the winter!
Pace,
*MUCCI*