Reopened in April 2025 The Sterkfontein Caves is a sister site to the nearby Maropeng Visitor Centre. The site houses an interactive exhibition focusing on the development of humans and their ancestors over the millions of years ago. The displays focus on the geology of cave formation and how fossils are preserved and extracted and on the amazing finds of hominid fossils in the Sterkfontein Caves, the Cradle of Humankind's most famous fossil site. The caves at Sterkfontein were formed in dolomitic limestone and began to form 20-million years ago. Most caves including Sterkfontein - are formed by the dissolving action of weakly acidic rainwater, on the soluble calcitic rock of the area. The guided tours at the cave runs every half hour daily and takes the visitors from above the ground right deep into the caves. There is a conference facility at Sterkfontein Caves site which can cater for up to 120 delegates and a restaurant which open daily between 09h00-17h00.