Melville Koppies is a Nature Reserve and a Johannesburg City Heritage Site.This is the last conserved remnant of Johannesburg’s ridges as they were before the discovery of gold in 1886. Its geology goes back an estimated 3 billion years. The vegetation of the Koppies is entirely indigenous and is a remarkable example of the richness of highveld grasses, flowers, and trees so close to a city centre. These ridges have looked like this for hundreds of years.