British Lower Palaeolithic site on a terrace of the lower Thames Valley, North Kent, England, with a skull of possibly an archaic Homo sapiens with strong Neanderthal features. The skull bones are considerably thicker than those of modern European or Neanderthal skulls; the skull pieces may be the oldest of Homo sapiens found in Europe. More recent opinion holds that the skull is non-sapiens and has closer affinities with those of Neanderthal type. There is a succession of artifact-bearing strata of the Mindel-Riss interglacial period (400,000-200,000 years ago), with the earliest tools of Clactonian type. Middle Acheulian handaxes and a pointed biface assemblage were found in the Middle Gravel level and in the Upper Loam level, Middle Acheulian tools of a more evolved form and a refined ovate assemblage. The deposits contain useful environmental evidence, including abundant mollusk and mammal remains and large assemblages of stone tools.