‘Fossil technician Sipho Makhele deep underground in the darkness of the Sterkfontein Caves near Johannesburg. The caves are part of the Cradle of Humankind, one of South Africa’s 12 Unesco World Heritage Sites. (Photo: Ihsaan Haffejee)’

Fossil technician Sipho Makhele deep underground in the darkness of the Sterkfontein Caves near Johannesburg. The caves are part of the Cradle of Humankind, one of South Africa’s 12 Unesco World Heritage Sites. (Photo: Ihsaan Haffejee)

Fossil technician Sipho Makhele deep underground in the darkness of the Sterkfontein Caves near Johannesburg. The caves are part of the Cradle of Humankind, one of South Africa’s 12 Unesco World Heritage Sites. (Photo: Ihsaan Haffejee)

Fossil technician Sipho Makhele deep underground in the darkness of the Sterkfontein Caves near Johannesburg. The caves are part of the Cradle of Humankind, one of South Africa’s 12 Unesco World Heritage Sites. (Photo: Ihsaan Haffejee)