In 1938, the site was brought to the attention of
Robert Broom by a local schoolboy named Gert Terrblanche who had discovered several hominin teeth. The teeth formed part of a skull that would become the
holotype of
Paranthropus robustus. Broom began excavations at the site that would continue until approximately 1947 and would result in the discovery of numerous hominin remains. Two deposits were noted and named at the site — Kromdraai A (KA) and Kromdraai B (KB)— the latter being the site where the hominin remains were recovered. In 1955
C.K. Brain recommenced work at Kromdraai B and discovered numerous additional hominin remains as well as abundant non-hominin fauna. In the 1980s
Elizabeth Vrba briefly conducted excavations at Kromdraai B in order to recover additional samples for her work on South African bovids. In 1993 excavations were re-opened by
Francis Thackeray of the Transvaal Museum and
Lee Berger of the
University of the Witwatersrand and are currently ongoing. Thackeray and Berger were later joined by teams from
Harvard University and other collaborators. Important results of this work have been the recovery of additional hominin fossils as well as the obtaining of more accurate dates for the site. ==Recovered fossils==