14 September 2025 The Future is the Product of the Past

Britain’s Oldest Prehistoric Circle Uncovered, Potential Blueprint for Stonehenge

Recent archaeological findings at the prehistoric funerary site of Flagstones in Dorset have unveiled that this remarkable circular enclosure, dating back to 3,200 BC, stands as the oldest known example of monumental architecture in Britain, offering profound insights into the origins of Neolithic society.

Through cutting-edge radiocarbon analysis of human remains, red deer antlers, and charcoal discovered at the site, researchers have determined that Flagstones was constructed around 3200 BC, roughly two centuries earlier than previously believed. This discovery implies that the site could have acted as a prototype for later renowned monuments, including Stonehenge.

Recent findings from a collaborative study conducted by the University of Exeter and Historic England have been published in the latest edition of the journal Antiquity.

Dr. Susan Greaney, a specialist in Neolithic and Bronze Age monuments from Exeter’s Department of Archaeology and History, described Flagstones as an unusual monument, noting that it is a perfectly circular ditched enclosure associated with burials and cremations. She explained that, in some respects, it resembles earlier structures known as causewayed enclosures, while in other aspects, it shares similarities with later monuments referred to as henges. However, the precise classification of Flagstones among these types of monuments remained uncertain until now. The revised chronology indicates that it was built in an earlier period than previously thought.

Flagstones was unearthed in the 1980s during the construction of the Dorchester bypass, where excavations revealed a circular ditch with a diameter of 100 meters, formed by intersecting pits and likely accompanied by an earthwork bank. Currently, half of the site is situated beneath the bypass, while the other half lies under Max Gate, the former residence of Thomas Hardy, which is now managed by the National Trust. Flagstones is recognized as a scheduled monument, with artifacts and excavation records housed at the Dorset Museum.

Aerial view of the Flagstones excavations in the 1980s. Credit: Dorset Museum
Aerial view of the Flagstones excavations in the 1980s. Credit: Dorset Museum

Excavations uncovered at least four burials within the enclosure pits, including a cremated adult and three non-cremated children, along with three additional partial cremations of adults found in other locations. The resemblance of this site to the initial phase of Stonehenge, which dates back to around 2900 BC, led researchers to believe that Flagstones was constructed around the same time.

The recent scientific dating initiative, spearheaded by Dr. Greaney and Dr. Peter Marshall, the former Scientific Dating Co-Ordinator at Historic England, involved collaboration with laboratories at ETH Zürich and the University of Groningen, resulting in 23 new radiocarbon measurements.

The integration of radiocarbon dating with archaeological evidence has shown that early Neolithic activities, such as pit digging, occurred around 3650 BC. Following a significant gap of several centuries, the circular ditched enclosure was established around 3200 BC, with burials placed within it shortly thereafter. Notably, a later burial of a young adult male beneath a large sarsen stone at the center of the enclosure took place approximately 1,000 years after its initial use.

Dr. Greaney highlighted the significance of Flagstones’ chronology in understanding the evolving sequence of ceremonial and funerary monuments in Britain. She noted that Stonehenge, considered the ‘sister’ monument to Flagstones, shares a nearly identical first phase but dates to around 2900 BC. Dr. Greaney raised questions about the relationship between the two sites, asking whether Flagstones could have inspired Stonehenge or if the new findings indicate that the current dating of Stonehenge may require reevaluation.

Plan of the excavated western half of the Flagstones enclosure. Credit: Susan Greaney
Plan of the excavated western half of the Flagstones enclosure. Credit: Susan Greaney

Additionally, Flagstones demonstrates connections to other notable sites, such as Llandygái ‘Henge’ A in Gwynedd, Wales, and even locations in Ireland, as indicated by artifacts and burial customs. These findings underscore the interconnected nature of Neolithic communities across Britain and beyond.

University of Exeter

Greaney, S., Hajdas, I., Dee, M., & Marshall, P. (2025). Beginning of the circle? Revised chronologies for Flagstones and Alington Avenue, Dorchester, Dorset. Antiquity, 1–17. doi:10.15184/aqy.2025.28

Cover Image Credit: Flagstones enclosure seen shortly after construction in the middle Neolithic period. Reconstruction by Jennie Anderson

Related Articles

Archaeologists made a remarkable discovery in Kosovo: Evidence that the great Byzantine Emperor was of Dardanian origin

19 August 2023

19 August 2023

A mixed team of international and local experts led by Professor Christophe J. Goddard has unearthed a monumental inscription of...

An Elamite inscription attributed to Xerxes the Great was found at Persepolis

26 February 2022

26 February 2022

During the classification and documentation project of inscribed objects and fragmentary inscriptions in the Persepolis Museum reserves, experts discovered a...

Mysterious 1,600-Year-Old Roman-Era Burial Unearthed in Delbrück-Bentfeld, Germany

15 June 2025

15 June 2025

Archaeologists have uncovered a rare and mysterious Roman-era burial in Delbrück-Bentfeld, Germany, revealing a unique glimpse into the region’s ancient...

Rare Avar-Era Saber Unearthed Near Székesfehérvár, Hungary

13 September 2025

13 September 2025

Archaeologists in Hungary have made a remarkable discovery: a rare Avar-period saber has been unearthed near the city of Székesfehérvár....

Beer remains that are 9,000 years old have been discovered in China’s unique Hu pots

3 September 2021

3 September 2021

Archaeologists in southeast China have discovered evidence of beer consumption in ceramic vessels at the burial site called Qiaotou. The...

Drought accelerated Hittite Empire’s collapse

9 February 2023

9 February 2023

Researchers have offered new insight into the abrupt collapse of the  Hittite Empire in the Late Bronze Age, with an...

A Mysterious 1,800-year-old Roman Statue Unearthed During Car Park Construction Work in UK

13 March 2024

13 March 2024

A 1,800-year-old Roman marble statue of a woman’s head was discovered during construction in the parking lot of Burghley House...

The ancient necropolis area in Turkey’s Antalya becomes a museum

22 July 2023

22 July 2023

The East Garage Necropolis Area, which was once a public market in the southern province of Antalya and where archaeological...

A 4,500-year-old rope remains were discovered at Turkey’s Seyitömer mound

26 December 2021

26 December 2021

In the rescue excavation carried out in the mound, which is located within the license border of Çelikler Seyitömer Electricity...

Iron Age and Roman Skeletons Discovered on Alderney

19 May 2021

19 May 2021

Well-preserved skeletons from the late Iron Age and Roman periods were found in Alderney, one of the channel islands. The...

Swiss Scientists Identify Arrowhead Made from a Meteoritic Iron

1 August 2023

1 August 2023

In a recent study of archaeological collections in the Lake Biel region in Switzerland, an arrowhead from the Bronze Age,...

Huge funerary building and Fayoum portraits discovered in Egypt Fayoum

4 December 2022

4 December 2022

The Egyptian archaeological mission working in the Gerza archaeological site in Fayoum revealed a huge funerary building from the Ptolemaic...

The Latest Surprises Revealed by Investigations Inside the Tomb of Cerberus in Giugliano

24 July 2024

24 July 2024

The latest surprise revealed by investigations at the Tomb of Cerberus in Giugliano: The remains of a corpse covered with...

King Stephen 12th Century rare penny hoard found near Wymondham

21 November 2023

21 November 2023

An unnamed metal detectorist recently discovered a scarce collection of 12th-century silver pennies near the village of Wymondham in the...

A pre-Hispanic ceremonial center with unknown characteristics was discovered in the Andes

15 April 2023

15 April 2023

While investigating at Waskiri, near the Lauca River and the Bolivian-Chilean border, archaeologists found an impressive circular construction on a...