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Howmoor Quarry Dun is an Iron Age fortified settlement in Ayrshire, Scotland, built upon a dramatic foundation of volcanic bedrock. The site sits on Silurian to Devonian extrusive rocks—mafic lava and tuff formed during the Devonian period—which would have provided both a naturally defensible position and durable stone for construction. This ancient volcanic geology, exposed and weathered over millennia, shaped both the monument's location and the materials available to its inhabitants.
Duns were circular or oval stone-built fortifications characteristic of Iron Age Scotland, typically housing small elite groups or extended family units. Howmoor Quarry exemplifies this building tradition, positioned to exploit the rugged topography of the Ayrshire landscape. The mafic volcanic stones—dark, dense rock formed from ancient lava flows—would have been worked into substantial defensive walls, the fortress's defining architectural feature.
The monument is now protected by Historic Environment Scotland under reference SM2193, recognising its significance as evidence of Iron Age settlement patterns and social organisation in southwest Scotland. The survival of such sites reflects the durability of their stone construction, even as the quarrying that gives the site its modern name represents a later phase of human exploitation of the same volcanic bedrock that Iron Age builders had utilised over two thousand years earlier.
Howmoor Quarry,dun is a scheduled monument protected by Historic Environment Scotland under reference SM2193. View the official record →
Howmoor Quarry Dun is an Iron Age fortified settlement in Ayrshire, Scotland, built upon a dramatic foundation of volcanic bedrock. It is designated a Scheduled Ancient Monument by Historic Environment Scotland under reference SM2193.
Howmoor Quarry,dun dates from the iron age period, and is classified as a dun. It is one of over 32,000 scheduled monuments protected across the UK.
Howmoor Quarry,dun is a Scheduled Ancient Monument, legally protected by Historic Environment Scotland — the body responsible for designating and safeguarding heritage sites in Scotland. The official designation reference is SM2193.
Several scheduled monuments lie within 10 km, including Balchriston Crossing,dun 320m E of (2.1 km), Maybole Collegiate Church (3.1 km), Crossraguel Abbey (3.5 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Howmoor Quarry,dun's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Howmoor Quarry,dun stands on Unnamed Extrusive Rocks, Silurian To Devonian, bedrock that formed in the Devonian. The rock here is mafic lava and mafic tuff.