Johannesburg Is Hiding Something Most South Africans Never Notice

0:00 The hidden world beneath Johannesburg 0:47 Johannesburg’s missing river and continental divide 2:59 Ancient rocks and the Witwatersrand gold basin 7:44 Deep mines and the asteroid that protected the gold 10:47 Mine voids, sinkholes and toxic water 16:46 Altitude, storms, forests and the city’s water supply 21:04 Ancient human fossils and the river that could save Joburg 31:04 When the underground water comes back Johannesburg is built on a hidden world of gold, ancient rock and unstable ground—and I’m uncovering what lies beneath the city. I explore the Witwatersrand Ridge, the gold-bearing basin, the deepest mines, the Vredefort impact and the geology that helped preserve Johannesburg’s wealth. I also look at the city’s missing river, its water supply, altitude, lightning and ancient landscapes. Then I follow the consequences above and below ground: abandoned mines, sinkholes, acid mine water, uranium-contaminated waste, mine dumps, seismic activity and the slow return of groundwater. By the end, Johannesburg may never look the same again.