A rock shelter in the New Guinea Highlands, with a sequence that starts with edge-ground axes (adzes) and flake tools of early Australian type (c 11,000 BC), and then documents trade in coastal shells (from c 8000 BC) and the appearance of pigs (by 3500-4000 BC). The deposits contain bone tools and a rich faunal assemblage. Pigs, which were not native, occur from about 6500 bp.