Stonehenge: Did animals pull stones from Wales to England?

One of Britain's biggest and oldest stone circles has been found in Wales - and could be the original building blocks of Stonehenge.

Archaeologists uncovered the remains of the Waun Mawn site in Pembrokeshire's Preseli Hills.

They believe the stones could have been dismantled and rebuilt 150 miles (240 km) away on Salisbury Plain, Wiltshire.

Professor Michael Pearson said the remains found in Pembrokeshire were the exact same size as the ditch around Stonehenge, and the type of stone matched.

Prof Pearson said the remains of a cow, which was found at the site, suggested animals may have helped to pull the stones to their resting spot in England.