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Maen Sertan Boundary Stone is a medieval boundary stone protected by Cadw as a scheduled monument (DE093). Located in Wales, the stone stands upon bedrock of Wenlock Rocks—interbedded sandstone and conglomerate—which gives the immediate landscape its characteristic rocky outcrops and uneven terrain. Boundary stones of this type were commonly erected during the medieval period to demarcate the limits of estates, parishes, or territories, serving as fixed points in the landscape that could be recognised and referred to in property disputes and transfers.
The Wenlock geology underlying the site is typical of the Palaeozoic formations found across much of Wales. The durable sandstone and conglomerate would have provided local stone suitable for shaping or selecting suitable natural stones for boundary marking purposes. The monument's survival to the present day reflects both the stability of its position and the robustness of medieval stone markers in withstanding weathering over centuries.
As a protected monument under Cadw's care, Maen Sertan preserves evidence of medieval land management and territorial organisation. Such boundary markers remain important archaeological witnesses to the pattern of settlement and land use in medieval Wales, marking divisions that often survived into later centuries and influenced the modern landscape structure.
Maen Sertan Boundary Stone is a scheduled monument protected by Cadw under reference DE093. View the official record →
Maen Sertan Boundary Stone is a medieval boundary stone protected by Cadw as a scheduled monument (DE093). It is designated a Scheduled Ancient Monument by Cadw under reference DE093.
Maen Sertan Boundary Stone dates from the medieval period, and is classified as a boundary stone. It is one of over 32,000 scheduled monuments protected across the UK.
Maen Sertan Boundary Stone is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is DE093.
Several scheduled monuments lie within 10 km, including Pont Rhyd-Llanfair (3.2 km), Maes-Gwyn Castle Mound (3.8 km), Brohomagli Stone (Now In Voelas Hall) (4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Maen Sertan Boundary Stone'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.
Maen Sertan Boundary Stone stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is sandstone and conglomerate, interbedded.