A group of stone assemblages with heavy core tools found on Kangaroo Island and the nearby peninsulas of South Australia, a variant of the Australian Core Tool and Scraper Tradition. Kangaroo Island, now separated from Australia by a 15-km strait, was joined to the mainland during the Pleistocene. There were no Aboriginal inhabitants at the time of European contact. Radiocarbon estimates of 14,000 BC have been obtained for a possibly subsequent small scraper industry in Seton rock shelter on Kangaroo Island. Kartan tools include unifacially flaked pebble choppers, large steep-edged flake scrapers, waisted ax blades, and large horsehoof cores (mean weights of 500 grams), sometimes associated with small quartz flakes. The proportion of core tools in the assemblage is much higher than in other Pleistocene sites.