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They also claimed that small pieces of debris found near Stonehenge, which were traced back to the dig site in Wales, were actually transported by the movement of glaciers over half a million years ago, and not brought by ancient masons along with the bluestones.
They are not typical of the local geology- indeed, the source of the bluestones, the first stones erected, has now been traced to the Preseli Mountains of south-west Wales. Somehow these enormous stones were transported to the Salisbury Plains. The stones were surely too heavy for timber rollers. Perhaps they were transported on sledges, on greased tracks of wood, pulled by rope that had been made from the plant fibre of the indigenous lime bark soaked in water for weeks.