Ancient builders hauled a 13,000-pound Stonehenge altar stone across roughly 450 miles, study finds
A Curtin University-led study argues the Altar Stone at Stonehenge (weighing about 13,000 pounds) was moved by Neolithic humans over hundreds of miles in staged moves—overland hauling combined with river or coastal transport—rather than by glaciers, suggesting a long, organized, multi-year effort.