Located south-east of Pleasanton, Sunol Regional Wilderness presently only has developed climbing at Indian Joe Caves, but other opportunities appear to exist as well. There's a pretty wide variety of rock types in the park, but Indian Joe caves is meta basalt. While approaching the area, you can see some rocks on the top of a hill west of the main entrance, this is called flag mountain and appears to have climbing on it, though developement has been discouraged because of concerns it would disrupt raptor nesting.There's a $4 entrance fee and the gate gets locked a little after dusk (9 pm in August), though camping is permitted in the park.
Getting There
From the 680-580 interchange, take 680 south 8 miles to the highway 84/Calaveras road. Go left on Calaveras and follow it past where the speed limit drops to 25. Shortly after the speed limit change go left (4.3 miles from the turn onto Calaveras) on Geary Road. Shortly thereafter you'll reach the fee station.