This is called the West Rand Group and it created several interesting topographical features such as the eponymous Witwatersrand ridge which runs between Germiston and Krugersdorp.
Loku kubitwa nge West Rand Group futsi kwakhe tintfo letiningi letichazanako, njengentfo lechaza iWitwatersrand ridge legijima phakatsi kwe Germiston ne Krugersdorp.