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Kathu Pan (KP1) is an in-filled sinkhole located in the Northern Cape Province of South Africa, one of eleven localities excavated between 1978 and 1990 by Peter Beaumont. The "pan" in the name refers to a geological formation, a shallow depression with an internal drainage and a high water table, and in this case covers an area of about .3 square kilometer (.1 square mile). KP1 formed within Cenozoic eracalcretes, and its sequence includes human occupations dated from Early through Later Stone Age, with important Acheulean and Fauresmith industries. Fauresmith has a controversial standing in the paleontological community, because typically blades do not occur until 200,000 years later than handaxes: this situation at Wonderwerk cave and other locations has been attributed to mixing of unrelated cultural strata. However, the lithic assemblage at KP1 does not appear to be mixed: Stratum 3 has strikingly different sediments than does Stratum 4, and while Stratum 3 artifacts are water rolled, Stratum 4 are not. Lithic artifacts in Strata 3 and 4 include a total weight of 2,000 kilograms, over 6,000 of which came from Stratum 4a.
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