© Mapbox · © OpenStreetMap contributors · Boundary data © Historic Environment Scotland
Grennan Hill is a Iron Age fort situated in Dumfriesshire, southern Scotland. The monument occupies a naturally defensive position on bedrock composed of Shinnel and Glenlee Formation wacke, part of the ancient Ashgill geological sequence. This hard metamorphic stone would have provided a stable foundation for the fort's defensive structures, whilst the rocky terrain itself offered inherent protection to its occupants.
The fort demonstrates the strategic settlement patterns of Iron Age communities in south-west Scotland. Its location on the Dumfriesshire uplands reflects the importance placed by contemporary societies on controlling elevated positions with commanding views across the surrounding landscape. The wacke bedrock, whilst challenging to quarry and work, would have supported substantial ramparts or palisading typical of Iron Age fortifications in this region.
Grennan Hill is protected as a scheduled monument by Historic Environment Scotland under reference SM6285, recognising its significance as an archaeological site. The fort survives as a valuable record of Iron Age settlement and territorial organisation in south-west Scotland, preserving evidence of the lives and defensive strategies of communities that occupied this upland terrain over two thousand years ago.
Grennan Hill, fort 250m S of is a scheduled monument protected by Historic Environment Scotland under reference SM6285. View the official record →
Grennan Hill is a Iron Age fort situated in Dumfriesshire, southern Scotland. It is designated a Scheduled Ancient Monument by Historic Environment Scotland under reference SM6285.
Grennan Hill, fort 250m S 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.
Grennan Hill, fort 250m S 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 SM6285.
Several scheduled monuments lie within 10 km, including Tynron Doon,fort (1.3 km), Capenoch Loch,long cairn (2.8 km), Holmhill,enclosure 500m S of (4.8 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Grennan Hill, fort 250m S 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.
Grennan Hill, fort 250m S of stands on Shinnel Formation And Glenlee Formation (Undifferentiated), bedrock that formed in the Ashgill. The rock here is wacke.