From Cambridge News:
An ancient piece of rock art – unlike anything previously found in Eastern England – has been unearthed in a Cambridgeshire village.
The hand-sized artefact is thought to be 4,500 years old, and it was found by a woman taking part in a weekend geological course run by Cambridge University at Over.
It is a slab of weathered sandstone, with two pairs of concentric circles etched into the surface – a motif which, according to archaeologists, is typical of “grooved ware” art from the later Neolithic era, in 2,500 BC…