Stannon stone circle is located two and a half miles southeast of Camelford on Stannon Moor, and is made up of up to 68 stones. There are a number of cairns located on Stannon Down. Four small upright stones on the north-west of the circle are aligned through Stannon to the Louden circle. Alignments between circles and other sites in the area suggest astronomical influences around certain times of the year equinoxes.
The site can be reached by the road that leads to the clay works from Harpur's Downs to the west.