The largest stone circle at Stanton Drew is the Great Circle, 113 m in diameter and the second largest stone circle in Britain (after Avebury); It is considered to be one of the largest and most impressive Neolithic monuments to have been built. The Great Circle probably consisted of 30 stones, of which 27 survive today, and was surrounded by the ditch (approximately 135m outer diameter — now filled in) of a henge. The North East Circle is 30 m in diameter and probably consisted of 10 or more stones, of which 8 survive today. The South West Circle is 43 m in diameter, and has 12 stones surviving today.
In the mid 17th century, after one of the stones had fallen, human bones and an object described as a “round bell, like a large horse-bell” were found. While human burial at the foot of a standing stone is by no means unknown, the “bell”, whatever it is, suggests some caution over assigning a date to the burial. A ‘bronze serpent ring’ has also been found at Stanton Drew.
This short clip talks about Stanton Drew at about the 3 minute mark of the video.