Neolithic Monument Engineering: The Astonishing 500-Mile Journey of Stonehenge's Altar Stone

A groundbreaking analysis of Stonehenge's Altar Stone reveals that Neolithic people transported the 6-ton monolith from Scotland, a remarkable feat of engineering & organization nearly 4,500 years ago

One of the enduring mysteries of Stonehenge, the iconic prehistoric monument in southern England, has been the origin of its stones. While researchers have traced the upright sarsen stones to the nearby Marlborough Downs and the smaller bluestones to southwest Wales, the Altar Stone—a massive 16-foot-long, six-ton slab of sandstone at the heart of the s…