May 18, 1952: Carbon-14 Sets Stonehenge Date at 1848 B.C., More or Less. 1952: An analysis of the carbon-14 radioisotope in a piece of charred oak from an excavated pit at Stonehenge estimates that the mysterious structure on Englands Salisbury Plain is 3,800 years old, plus or minus 275 years.

How do they date Stonehenge?

Two types of stone are used at Stonehenge – the larger sarsens and the smaller bluestones. One of the last prehistoric activities at Stonehenge was the digging around the stone settings of two rings of concentric pits, the so-called Y and Z holes, radiocarbon dated by antlers within them to between 1800 and 1500 BC.

Where do the stones from Stonehenge come from?

The sarsen stones are a type of silcrete rock, which is found scattered naturally across southern England. For many years most archaeologists believed that these stones were brought from the Marlborough Downs, 20 miles (32km) away, but their exact origin remained a mystery.