T-shaped stone pillars that were up to 18 feet (5.5 meters ... a series of dams were built in the 1960s. —Was Stonehenge an ancient calendar? A new study says no. The Carnac stones, located ...
Related: Ancient people lived at German 'Stonehenge ... when people in the area lived as hunter-gatherers. T-shaped stone pillars that were up to 18 feet (5.5 meters) tall were used to build ...