The age of the henge monument at Stanton Drew stone circles is unknown .
The age of the henge monument at Stanton Drew stone circles is believed to be from the Neolithic period , as is the chambered tomb known as Stoney Littleton Long Barrow .
The age of the henge monument at Stanton Drew stone circles is unknown , but is believed to be from the Neolithic period , as is the chambered tomb known as Stoney Littleton Long Barrow .