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.
Lokhu kubizwa ngokuthi i-West Rand Group futhi yakha izici eziningi ezithakazelisayo zezobuciko, ezifana ne-Witwatersrand igwadule eliqhamukayo eliphakathi kweGermiston neKrugersdorp.