JOHANNESBURG - Most of the zama zamas coming out of the Stilfontein mine are foreign nationals.
This and other crimes linked to undocumented immigrants have brought the issue of border control into sharp focus.
WATCH | Operations to bring up illegal miners at Stilfontein to start next week
What does it take to manage the country's inland ports of entry?
Soldiers, deployed under Operation Corona, have given the media a sense of the work they do to combat the movement of illegal, substances, people and stolen vehicles.
The South African National Defence Force invited eNCA to take a closer look. eNCA reporter Hloni Mtimkulu is there.