Avebury Stone Circle

Avebury stone circle near Marlborough in Wiltshire is the largest stone circle of its type in Europe. When I was living in England I had been to several stone circles , burial mounds, standing stones and other neolithic remains but none compare to this.
It's about 1,000m in diameter, some of the standing stones weigh more than 40 tonnes and the ditch is, in places more than 40 feet high. It's one of those places where you simply have to scratch your head and wonder how the heck anyone could shift that amount of soil in such an orderly fashion with no (known) equipment at all.

To add a slightly more alien feel to the HDR shots I added a grunge effect using JixiPix Grungetastic, a cool little app that you can get for $10 or so from Jixi Pix (www.jixipix.com)

Avebury is thought to have been constructed from 2840 BC and covers more than 100 hectares of land. 
It includes West Kennet long barrow and the unique Silbury Hill, a 40m high mountain constructed around the same time.
No one really knows why these places were so important nor why they were developed in such a way.
It's just too long ago to find much evidence other than what carbon dating can provide.
Which isn't much.

Silbury Hill, the largest man-made neolithic structure in Europe.