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Brough of Bigging is a promontory fort located on the Orkney mainland near Yesnaby. The monument occupies a naturally defensive headland, cut off from the surrounding landscape by a substantial ditch and rampart that exploit the Devonian sedimentary rocks underlying the site. These ancient stone foundations provided excellent building material for the fort's defences, which would have rendered the promontory a formidable stronghold in the Iron Age.
The site exemplifies the strategic use of Orkney's distinctive geology. The sedimentary bedrock, exposed across the cliffs and headland, allowed the fort's builders to construct robust defensive works that took advantage of the natural topography. The narrow neck of land connecting the promontory to the mainland could be effectively sealed against potential attackers, transforming the headland into a secure refuge for a substantial community and their livestock.
Brough of Bigging is protected as a scheduled monument under Historic Environment Scotland reference SM6214, recognising its archaeological and historical significance. The fort remains an important example of Iron Age settlement patterns in northern Scotland, demonstrating how Orkney's communities adapted their defences to the islands' harsh coastal environment and limited timber resources.
Brough of Bigging, promontory fort, Yesnaby is a scheduled monument protected by Historic Environment Scotland under reference SM6214. View the official record →
Brough of Bigging is a promontory fort located on the Orkney mainland near Yesnaby. It is designated a Scheduled Ancient Monument by Historic Environment Scotland under reference SM6214.
Brough of Bigging, promontory fort, Yesnaby dates from the iron age period, and is classified as a promontory fort, yesnaby. It is one of over 32,000 scheduled monuments protected across the UK.
Brough of Bigging, promontory fort, Yesnaby 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 SM6214.
Several scheduled monuments lie within 10 km, including East Bigging, burnt mound 390m S of (1.1 km), Billia Fiold, enclosures, platforms and banks (1.9 km), Burn of Selta, farmsteads, field system and associated remains (3 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Brough of Bigging, promontory fort, Yesnaby'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.
Brough of Bigging, promontory fort, Yesnaby stands on Paleozoic sedimentary rocks, bedrock that formed in the Devonian. The rock here is sedimentary rocks.