This documentary series offering the lowdown on hard-hitting issues from around the globe continues. Here, reporter Seyi Rhodes and director Eric McFarland visit Johannesburg to meet miners who are risking their lives to descend deep underground in South Africa's abandoned gold mines, hoping to scratch a dangerous living from whatever ore remains. With the mines controlled by violent gangs and surrounded by lawless settlements, the pair's miniature cameras capture the stark reality of life at the end of a gold rush.