London (CNN)Five thousand years after people in the British Isles began building Stonehenge, scientists now know precisely where some of the massive rocks came from and how they were unearthed.
A team of 12 geologists and archaeologists from across the United Kingdom unveiled research this month that traces some of the prehistoric monument’s smaller stones to two quarries in western Wales.
The team also found evidence of prehistoric tools, stone wedges and digging activity in those quarries, tracing them to around 3000 BC, the era when Stonehenge’s first stage was constructed.
