The Wedge is a prominent pinnacle just northwest of the paved road (park at pullout with display, see pic in Top Secret Tower approach -- pullout is about halfway between Jumbo Rocks campground and Live Oak Picnic area / Split Rocks intersection, directly across from Pope's Hat).
Hike thru a notch in the first formations and aim for the big wedge feature atop the next wall -- routes are on this southeast-facing wall.
This area was the scene of some early JT climbing (1950s). The rock is very coarse. Well protected from north winds and quite balmy on sunny days. The Wedge area is actually the southern tip of Cunning Rock.
It can be easily seen, and approached, from the road.
On the road, mostly Southwest