By:Novyny

One of the African cities has the largest gold mine in the world. We are talking about the city of Johannesburg, which is the commercial capital of South Africa.

Why you should visit Johannesburg

The huge gold deposit has turned Johannesburg into the center of the mining industry. Since the 1970s, more than 40,000 tonnes of gold have been mined in the basin, accounting for about 22 per cent of this precious metal on the earth's surface.

The vast labyrinth of mine tunnels stretches for more than 140 kilometres.

Today, the South Deep mine is considered the largest gold mine in the world and the seventh deepest mine in the world. It extends three kilometers beneath the surface of the Witwatersrand Basin.

As a reminder, we talked about the airport in Europe where you can land in three countries at the same time. We also wrote about where in the Maldives the sea is covered with stars.