In the Chew Valley to the South of Bristol there stands a complex of stone circles and other monoliths. The age of the set of circles is estimated to be approximately 5000 years old, placing its origin in the Stone Age [English Heritage *1].

In 1997 a great deal of attention was drawn to the circles as English Heritage published the results of a detailed magnetometer survey of the Great Circle and the North-East circle. The Survey produced spectacular results which an be seen on various websites that indicate that the complex was much more complicated than originally thought. Stones may have been removed from the site and there are certainly buried stones that cannot be seen, or are only partially seen at the surface particularly seen in the centre of the Great Circle. A henge has been discovered around the outside of the Great Circle and there are hundreds of little pits in concentric circles in the inside of the circle. English Heritage determined that the circles was once part of a large wooden and stone structure which was probably used as a large arena. Follow this link to the English Heritage site to find an interpretation of the magnetometer surveys.