The history of Johannesburg starts over 2 billion years ago when a giant meteor struck the earth 100 kilometers from Johannesburg, in an area which is now called the Vredefort Dome, a world heritage site, and the largest known meteor impact site in the world.
Tens of thousands of years ago Johannesburg was inhabited by indigenous people. They lived in the Johannesburg area until about AD 1060 when the Tswana speaking people migrated to the area. The earlier settlements died out, and it was only in the 1700s that these groups re-established themselves in the Klipriviersberg Nature Reserve. Officially the settlement was declared by Paul Kruger on the 4th October 1886 after the discovery of gold mine deposits.