Scheduled MonumentsWalesOffa's Dyke: Chirk Castle Section extending NE from Castle Mill
Early Medieval · Linear Earthwork

Offa's Dyke: Chirk Castle Section extending NE from Castle Mill

Denbighshire, Wales
Cadw SAM DE134
Period
Early Medieval
Site type
Linear Earthwork
Broad class
Monument
Nation
Wales
Boundary

Scheduled area

© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw

Overview

History & significance

Offa's Dyke: Chirk Castle Section extending NE from Castle Mill is a linear earthwork forming part of the eighth-century defensive frontier constructed under King Offa of Mercia. The section runs northeastward from Castle Mill near Chirk and comprises a substantial bank with an accompanying ditch, characteristic of the dyke's engineering throughout its length. Dating to the late eighth century, this monument represents one of the most ambitious earthwork projects of Anglo-Saxon Britain, constructed to demarcate territorial boundaries between the Kingdom of Mercia and Welsh principalities. The Chirk section preserves significant archaeological evidence of Early Medieval frontier construction and remains a crucial element of this scheduled ancient monument protected under Welsh heritage legislation.

Offa's Dyke: Chirk Castle Section extending NE from Castle Mill is a scheduled monument protected by Cadw under reference DE134. View the official record →

About this monument

Questions & answers

What is Offa's Dyke: Chirk Castle Section extending NE from Castle Mill?

Offa's Dyke: Chirk Castle Section extending NE from Castle Mill is a linear earthwork forming part of the eighth-century defensive frontier constructed under King Offa of Mercia. It is designated a Scheduled Ancient Monument by Cadw under reference DE134.

What period does Offa's Dyke: Chirk Castle Section extending NE from Castle Mill date from?

Offa's Dyke: Chirk Castle Section extending NE from Castle Mill dates from the early medieval period, and is classified as a linear earthwork. It is one of over 32,000 scheduled monuments protected across Britain.

Who is responsible for protecting Offa's Dyke: Chirk Castle Section extending NE from Castle Mill?

Offa's Dyke: Chirk Castle Section extending NE from Castle Mill 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 DE134.

What other scheduled monuments are near Offa's Dyke: Chirk Castle Section extending NE from Castle Mill?

Several scheduled monuments lie within 10 km, including Castell Brogyntyn ringwork castle 300m north east of Brogyntyn Farm (6.5 km), Offa's Dyke: section 410m long, E of Llawnt (6.8 km), Offa's Dyke: section 400yds (370m) long, E of Llawnt (7.2 km).

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