To find the Rooigang Boulders drive towards the parking of Danger Zone.
There is a big field (often you see Eland there) to the left of the farm road.
There is a small cairn on the right of the road about 1 km before the parking for Danger Zone.
Park here and walk down towards the valley. You'll come out on top of the cave with the trad climbs and some boulders.