In archaeogenetics, western hunter-gatherer (WHG, also known as west European hunter-gatherer, western European hunter-gatherer or Oberkassel cluster) (c. 15,000~5,000 BP) is a distinct ancestral component of modern Europeans, representing descent from a population of Mesolithic hunter-gatherers who scattered over western, southern and central Europe, from the British Isles in the west to the Carpathians in the east, following the retreat of the ice sheet of the Last Glacial Maximum. It is closely associated and sometimes considered synonymous with the concept of the Villabruna cluster, named after the Ripari Villabruna cave specimen in Italy, known from the terminal Pleistocene of Europe, which is largely ancestral to later WHG populations.
WHGs share a closer genetic relationship to ancient and modern peoples in the Middle East and the Caucasus than earlier European hunter-gatherers. Their precise relationships to other groups are somewhat obscure, with the origin of the Villabruna cluster likely somewhere in the vicinity of the Balkans. The Villabruna cluster (which is associated with the Epigravettian and other related archaeological cultures) had expanded into the Italian and Iberian Peninsulas by approximately 19,000 years ago, with the WHG cluster subsequently expanding across Western Europe at the end of the Pleistocene around 14-12,000 years ago, largely replacing the Magdalenian peoples who previously dominated the region. These Magdalenian peoples largely descended from earlier Western European Cro-Magnon groups that had arrived in the region over 30,000 years ago, prior to the Last Glacial Maximum.
