Broch of Ayre

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Coordinates: 58°53′47″N 2°55′16″W / 58.896336°N 2.921019°W / 58.896336; -2.921019

Broch of Ayre
Broch of Ayre is located in Orkney Islands
Broch of Ayre
Location in Orkney, Scotland
Location Orkney
Coordinates 58°53′47″N 2°55′16″W / 58.896336°N 2.921019°W / 58.896336; -2.921019
Type Broch
Periods Iron Age, Roman

Broch of Ayre, also known as St. Mary's Broch, is an Iron Age broch in Orkney, Scotland.


Broch of Ayre is found on the northern shore of Loch Ayre, in the parish of Holm on Orkney Mainland.


Broch of Ayre was first excavated in December 1901 and then again in the summer of 1909.[1] Little now survives, though part of the broch wall is still extant. The excavations revealed traces of internal architecture and external, probably later, structures.


The 1901 excavations revealed that the broch wall survived to over a metre in height in parts, with an entrance passage facing to the south-east. The passage contained a broken lintel and architectural features including a guard cell. The interior of the broch contained radial partitions using vertical slabs of stone, and a lintelled well. The broch itself was almost eighteen metres in external diameter, with walls almost five metres thick in places. The 1909 excavation revealed external buildings, likely built later, and the interior of the broch may also have been re-used and partially remodelled in a subsequent phase.[2]

Archaeological Finds[edit]

A number of iron objects were discovered, including two spearheads and an axehead. Locational information from the excavation is poor, although one of the spearheads was found associated with the guard cell. Nail heads, bronze pins and a bronze ring were also found. Evidence of metal-working, including a mass of conglomerate with fused pottery and iron, was also found. Bone pins, combs, antler fragments and cetacean bone vessels were found along with several dice. A large quantity of pottery was also found, along with the remains of whale, seal, ox, pig, red deer, sheep, horse, gannet and other birds, and human bone.


  1. ^ Graeme, A.S. (1914). "An account of the excavation of the Broch of Ayre, St Mary's Holm, Orkney". Proceedings of the Society of Antiquaries of Scotland. 48: 31–51.
  2. ^ Gilmour, S.M.D. (2000). Later Prehistoric and Early Historic Archaeology of the Western Seaways. University of Edinburgh, Unpublished PhD thesis. p. 362.

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