The cairn of Gavrinis is on a tiny island in the Bay of Morbihan, on the southern coast of Brittany, France. It's been dated earlier than the Egyptian pyramids (before 3500 BCE), thought to be contemporary with Stonehenge, Maes Howe in the Orkneys, and Newgrange in Ireland. Filled in approximately 300 yrs. after built, it's intricately carved walls have been protected throughout the centuries. Click on the pic to learn more about Gavrinis.
Three carved votive chambers in Gavrinis Dolmen passage grave, Gulf of Morbihan, Larmor-Baden Morbihan, France. The largest and most decorated tomb in Neolithic Europe with 29 six-foot-tall menhirs carved with labyrinthine fingerprints. Built on a hilltop circa 3400 B.C.E. near the stone rows of Carnac, with the sea rise it is now an island in the Morbihan Gulf.
NEWGRANGE is a prehistoric monument in County Meath, Ireland, about one kilometre north of the River Boyne. It was built about 3200 BC, during the Neolithic period, which makes it older than Stonehenge and the Egyptian pyramids. Newgrange is a large circular mound with a stone passageway and chambers inside. The mound has a retaining wall at the front and is ringed by 'kerbstones' engraved with artwork.
Silbury Hill in Avebury, Wiltshire is the largest man-made mound in Europe, it compares in height and volume to the roughly contemporary Egyptian pyramids. Probably completed in around 2400 BC, it apparently contains no burial. Though mysteriously important in itself, its purpose and significance remain unknown. There is no access to the hill itself. It is part of the Avebury World Heritage Site. Stonehenge is 16 miles away.