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Sinkholes and Scarred Landscapes: The Scourge of Unregulated Gold Mining in Johannesburg

A special investigation into abandoned Witwatersrand gold shafts where illicit informal extraction threatens vital urban infrastructure.

Sarah Jenkins•
Nov 1, 2026
•
5 min read
Industrial open cast gold mine and excavation machinery in South Africa

Centuries of extraction in Johannesburg leave a precarious subterranean labyrinth of abandoned tunnels.

Sinkholes and Scarred Landscapes: The Scourge of Unregulated Gold Mining in Johannesburg

JOHANNESBURG — Deep beneath the bustling freeways and suburban office parks of Johannesburg, thousands of informal miners—known locally as zama-zamas—descend daily into abandoned, century-old gold shafts, risking toxic gas asphyxiation and subterranean collapses in search of minute gold flecks.

The ecological and infrastructural fallout is reaching a crisis threshold. Surface sinkholes have begun destabilizing highway foundations and underground gas pipelines across the Witwatersrand basin, while heavily armed syndicates controlling the trade have sparked violent turf disputes, exacerbating xenophobic tensions across peripheral townships.

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Written by

Sarah Jenkins

Environmental & Climate Correspondent

Sarah Jenkins is an award-winning investigative journalist specializing in climate policy, renewable energy transitions, and ecological governance.