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Thirlstane Fort is an Iron Age fort situated in Berwickshire, in the Scottish Borders, approximately 350 metres north-east of Thirlstane. The fort occupies ground underlain by bedrock of the Reston Group, a geological formation dating to the Early Devonian period, comprising interbedded conglomerate and sandstone that would have presented a naturally well-drained foundation for settlement.
The fort represents a significant defensive structure from the Iron Age period, when such fortifications served as focal points for tribal territories and served both protective and symbolic functions within their landscapes. The choice of location on Reston Group bedrock reflects Iron Age builders' practical understanding of their local terrain, selecting ground that offered both natural drainage and suitable stone resources for construction.
The site is now protected as a scheduled monument under Historic Environment Scotland's designation SM4611, ensuring its preservation for future study and public understanding of Iron Age settlement patterns in the Borders region. The fort remains an important archaeological resource for understanding the development of fortified settlements in south-eastern Scotland during the pre-Roman Iron Age.
Thirlstane,fort 350m NE of is a scheduled monument protected by Historic Environment Scotland under reference SM4611. View the official record →
Thirlstane Fort is an Iron Age fort situated in Berwickshire, in the Scottish Borders, approximately 350 metres north-east of Thirlstane. It is designated a Scheduled Ancient Monument by Historic Environment Scotland under reference SM4611.
Thirlstane,fort 350m NE of dates from the iron age period, and is classified as a fort. It is one of over 32,000 scheduled monuments protected across the UK.
Thirlstane,fort 350m NE of 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 SM4611.
Several scheduled monuments lie within 10 km, including Thirlestane Hill,fort (0.3 km), Thirlestane Castle, old castle 510m SSW of Thirlestane (0.9 km), Blythe, settlement 1150m SSW of (1.2 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Thirlstane,fort 350m NE of'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.
Thirlstane,fort 350m NE of stands on Reston Group, bedrock that formed in the Early Devonian. The rock here is conglomerate and [subequal/subordinate] sandstone, interbedded.