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The Ring of Brodgar is a impressive neolithic stone circle and henge monument located on the mainland of Orkney

One of the largest and most impressive prehistoric ceremonial sites in the British Isles is in Scotland. The Ring of Brodgar forms a central part of the UNESCO world heritage site called the heart of neolithic Orkney.

A popular stone circle and henge. It was constructed around 2500 BCE
It is the only major henge and stone circle in Britain which is an almost perfect circle.

Its location is on a natural promontory between the Lochs of Stenness and Harray
One of the northernmost examples of circle henges in Britain. (1)

It is 104 metres (341 ft) in diameter, and the third largest in the British Isles (2)
Originally consisted of 60 standing stones, at the end of the 20th century, 27 remain upright. The stones are up to 4.5 meters (15 feet) tall.
       
Unusually for henges, the ditch is cut directly into bedrock, not earth
The stones are set within a circular ditch up to 3 metres (9.8 ft) deep, 9 metres (30 ft) wide and 380 metres (1,250 ft) in circumference. The ditch was carved out of the solid sandstone bedrock (3)

Archaeologist Aubrey Burl (4) notes that the diameter of the bank at Brodgar is almost exactly the same as the inner banks of the Avebury, and the Newgrange ring in Ireland
At 0.8297 metres, or 2.722 ft per ‘megalithic yard’, 125 “megalithic yards” is the controversial unit of measurement originally proposed by Alexander Thom. (5)

It has not been demonstrated how this information could have been shared (6)

Within 2 square miles, or 5.2 km, there are the two circle-henges, four chambered tombs, groups of standing stones, single stones, barrows, cairns, and mounds (7)

Perhaps the most important find is the remains of a large stone wall which may have been 100 metres (330 ft) long and up to 6 metres (20 ft) wide
Traversing nearly the entire peninsula, it may have been a symbolic barrier between the ritual landscape of the Ring and the mundane world around it. (8)

Believed to have been a ceremonial or ritual site rather than for one defence or habitation
Probably, it was used for seasonal festivals, astronomical observations, or communal gatherings. The scale and precision reflect a highly organized society with shared religious or cosmological beliefs.

Astronomical it may align with solar and lunar events, including solstices and lunar standstills
It is positioned to integrate with nearby sites, and creates a sacred ceremonial landscape.

No definitive burials have been found, reinforcing its likely ritual-social function rather than funerary
The layout and monumental scale suggest shared beliefs and regional cooperation.

Contexted within the Heart of Neolithic Orkney, The Ring of Brodgar, is managed by historic environment Scotland
Maeshowe, Skara Brae, the Standing Stones of Stenness and other nearby neolithic sites. Were probably interconnected in ritual, symbolic, and practical ways.

Represents culturally legacy and a peak of neolithic construction in the British Isles. ROB is free to visit and accessible year-round. There maybe no visitor centre on site, but it’s part of guided tours of the broader neolithic Orkney, and its monumental environment and landscape.

Cite: 1) Hawkes, Jacquetta (1986). The Shell Guide to British Archaeology (https://archive.org/details/shellguidetobrit0000hawk). London: Michael Joseph. ISBN 0-7181-2448-0 Pg. 261

2) “The Ring of Brodgar, Stenness, Orkney” (http://www.orkneyjar.com/history/brodgar/).
http://www.orkneyjar.com

3) Hawkes 1986, Pg. 262

4) Burl, Aubrey (1976). The Stone Circles of the British Isles (https://archive.org/details/stonecirclesof00burl). London: Yale University Press. ISBN 0-300-01972-6 Pg. 99

5) Thom, Alexander (1955). “A Statistical Examination of the Megalithic Sites in Britain”. Journal of the Royal Statistical Society. Series A (General). 118 part III (3): 275–295. doi:10.2307/2342494 (https://doi.org/10.2307%2F2342494). JSTOR 2342494 (https://www.jstor.org/stable/2342494)

6) Burl 1976, Pg. 71

7) Laing, Lloyd (1974). Orkney and Shetland: An Archaeological Guide. Newton Abbott: David and Charles Ltd. ISBN 0-7153-6305-0 Pg. 84

8) Ross, John (14 August 2007) “Experts uncover Orkney’s new Skara Brae and the great wall that separated living from dead”. Edinburgh. The Scotsman

Bibliography: “HES, Ring of Brogar” (https://www.historicenvironment.scot/visit-a-place/places/ring-of-brodgar-stone-circle-and-henge/). Historic Environment Scotland.

Heggie, Douglas C. (1981). Megalithic Science: Ancient Mathematics and Astronomy in North-west Europe. London: Thames and Hudson. ISBN 0-500-05036-8