© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Wat's Dyke: Section from Coed Llys to Chester-Holywell Road is an early medieval linear earthwork forming part of a substantial defensive frontier that runs for approximately 40 miles across the Welsh borderlands. This particular section, protected by Cadw as monument FL082, lies across bedrock of the Pennine Lower Coal Measures Formation, where mudstone, siltstone and sandstone form the underlying geology. The earthwork consists of a substantial bank with ditch, characteristic of the early medieval period when such barriers served to define territorial boundaries and regulate movement between regions.
The dyke was likely constructed during the 8th century, possibly under Mercian authority, and represents one of the most ambitious engineering projects of the early medieval Welsh-English borderlands. Its precise course through this section, from Coed Llys towards the Chester-Holywell Road, demonstrates careful surveying adapted to the local topography. The monument remains a significant landscape feature marking this historic frontier, commanding views across the surrounding terrain and preserving evidence of the political and territorial divisions of the early medieval period.
Wat's Dyke: Section from Coed Llys to Chester-Holywell Road is a scheduled monument protected by Cadw under reference FL082. View the official record →
Wat's Dyke: Section from Coed Llys to Chester-Holywell Road is an early medieval linear earthwork forming part of a substantial defensive frontier that runs for approximately 40 miles across the Welsh borderlands. It is designated a Scheduled Ancient Monument by Cadw under reference FL082.
Wat's Dyke: Section from Coed Llys to Chester-Holywell Road dates from the early medieval period, and is classified as a linear earthwork. It is one of over 32,000 scheduled monuments protected across the UK.
Wat's Dyke: Section from Coed Llys to Chester-Holywell Road 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 FL082.
Several scheduled monuments lie within 10 km, including Rhual-Isaf Round Barrow (4.4 km), Wat's Dyke: Section N & E of New Brighton (4.5 km), The Bailey Hill, Mold (5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Wat's Dyke: Section from Coed Llys to Chester-Holywell Road'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.
Wat's Dyke: Section from Coed Llys to Chester-Holywell Road stands on Pennine Lower Coal Measures Formation And South Wales Lower Coal Measures Formation (Undifferentiated), bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.