Agnes Mine in the Mesoarchaean Barberton Greenstone Belt of the Barberton Mountains, South Africa. Following the mine visits at Welkom, the group drove over 600 km to the east to Barberton. Next day they had an underground visit to the Anglovaal Agnes mine. Following a night in Barberton, the group departed next morning for Johannesburg to overnight before catching a flight to Harare in Zimbabwe next day to continue the tour.
Left: Going undeground at the Agnes portal, to a location 3.8 km distant on the portal level to start the traverse; Right: The Agnes portal from the ridge opposite in the Barberton Mountains. Photographs by Mike Porter