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Wat's Dyke: Section N of Rhydyn Farm is an early medieval linear earthwork that forms part of a substantial defensive boundary constructed during the early Anglo-Saxon period. This section lies across bedrock of the Millstone Grit Group, a sequence of mudstone, siltstone and sandstone laid down during the Namurian period. The underlying geology of alternating soft and resistant strata would have influenced both the route and construction method of the dyke, as builders adapted their earthwork to the natural landscape contours.
The dyke represents an ambitious engineering project designed to establish or reinforce a territorial frontier in the Welsh borderland. Like other sections of this linear earthwork, it would have served as both a physical barrier and a visible assertion of political control. The construction of such a substantial feature across varied terrain demonstrates considerable organisational capability and understanding of landscape strategy during the early medieval period.
The monument is protected under Cadw's guardianship with the reference number FL119. The Rhydyn Farm section preserves evidence of the dyke's original form and dimensions, contributing to our understanding of this important frontier work as it extends across the borderland landscape. Its preservation allows continuing study of early medieval defensive strategies and territorial organisation in the region.
Wat's Dyke: Section N of Rhydyn Farm is a scheduled monument protected by Cadw under reference FL119. View the official record →
Wat's Dyke: Section N of Rhydyn Farm is an early medieval linear earthwork that forms part of a substantial defensive boundary constructed during the early Anglo-Saxon period. It is designated a Scheduled Ancient Monument by Cadw under reference FL119.
Wat's Dyke: Section N of Rhydyn Farm 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 N of Rhydyn Farm 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 FL119.
Several scheduled monuments lie within 10 km, including Offa's Dyke: Plas Power Section (8.4 km), Bersham Ironworks (8.7 km), Hillbury Round Barrow (8.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Wat's Dyke: Section N of Rhydyn Farm'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 N of Rhydyn Farm stands on Millstone Grit Group [See Also Migr], bedrock that formed in the Namurian. The rock here is mudstone, siltstone and sandstone.