get to the the parking area near the beacon
park the car
walk through the gate
walk on the left path (the right one takes you to a viewpoint)
after about 100m the path goes down the hill, but in front of you there is a fence
walk to the fence and follow it around (there is a path on the rhs of it)
down the path and there is the rock
small rock face, 2 main areas
not very big but good enough for a few hours and good bouldering