NB. this is not a SAMAA registered site
It's the paragliding mountain - faces East-West, more or less. You need a 4x4 to get to the top, or you pay (I think) Swallow's Nest to take you to the top. If you travel from Jhb/Pta to Rustenburg on the N4, you go all the way through town, up the hill outside of town, down the other side, past the Sun City turn-off, and about 1km further there's a sign for Swallows Nest to the left. Take the dirt rd, and then I think it's the 3rd rd to the left where you turn onto another dirt rd, which goes towards the mountain. You go through a gate and the rd goes onto cement. A little further up you turn right towards the camp site, pub etc.
regards Eben