In 1924, Dart discovered the first "Australopithecus africanus" fossil, an extinct hominin closely related to humans. His colleague, Professor Robert Burns Young from the Buxton Limeworks, had sent Dart two crates of fossils from the small town of Taung in the North West Province of South Africa. Upon seeing the fossils, Dart immediately recognized one as being an early human because its brain dimensions were too large for a baboon or chimpanzee. Blasting had exposed a breccia-filled cave and the child's skull had come to light together with several fossilized monkeys and hyraxes. M. de Bruyn had noticed their unusual nature in November 1924 and informed the Limeworks manager, Mr. A.E. Spiers.