The Preseli Mountains, also known as the Preseli Hills, or just the Preselis, are a range of hills in western Wales, mostly within the Pembrokeshire Coast National Park and entirely within the county of Pembrokeshire. From Wikipedia
Geochemical matching of the Newall Boulder to a Preseli Hills quarry, combined with findings that Salisbury Plain lacks glacial deposits, demonstrates deliberate Neolithic quarrying and transport.
