Bluehenge (Bluestonehenge): a prehistoric henge and stone circle near Stonehenge

Discovery and excavation

The site was first investigated during fieldwork by the Stonehenge Riverside Project in 2008 and 2009. Archaeological excavation revealed a roughly 25-metre-wide henge—an enclosure defined by an inner ditch and outer bank—and a series of stone settings set within that enclosure. None of the original standing stones survive above ground. Finds included worked flint tools and chisel arrowheads whose forms are consistent with Late Neolithic to early Bronze Age dates; radiocarbon and typological evidence place much of the activity in the third millennium BC.

Physical characteristics

• Size: the stone circle or setting is estimated to have had a diameter close to 10 metres (about 33 feet).
• Stone evidence: excavation recovered numerous small bluestone fragments and packing stones, from which archaeologists infer a ring of rough-hewn stones—perhaps as many as 20–30—once stood.
• Henge features: an 82-foot (c. 25 m) ditch and an outer bank mark the enclosure; internal pits align in a circular pattern where stones were placed.

Dating and relationship to Stonehenge

Material culture and stratigraphy suggest construction and use during the Late Neolithic into the early Bronze Age, roughly in the third millennium BC. Many archaeologists propose that the small bluestones at Bluehenge were removed around 2500 BC and incorporated into later phases of Stonehenge, which underwent major rebuilding at that time. Geochemical studies show the bluestone lithologies match outcrops in Pembrokeshire and other parts of West Wales, which explains the name and links both monuments to distant stone-working traditions.

Significance and interpretations

Bluehenge is important for understanding the wider ritual landscape that includes Stonehenge, the River Avon and associated burial mounds. Some interpretations see the smaller bluestone ring as part of a processional route, a preliminary setting for stones destined for Stonehenge, or a distinct ritual space. The proximity to the Avon suggests connections between water-based journeys and ceremonial movement. While several hypotheses exist, excavation data have emphasized the site’s role within a network of contemporary monuments rather than as an isolated feature.

Conservation and access

Because the stones no longer stand, Bluehenge is primarily of archaeological interest and is protected as part of the prehistoric landscape of Wiltshire. Fieldwork continues to inform conservation decisions and public interpretation. For further scholarly summaries and site reports see publications linked from the project pages and regional heritage resources: stone circle reports and project summaries provide accessible entry points for non-specialists and students.

Notable facts: Bluehenge was named after the recovered bluestone fragments; it demonstrates the long-distance movement of stone in the Neolithic and illustrates how monuments in the Stonehenge zone were modified, dismantled and re-used over centuries.