Scheduled MonumentsWalesOffa's Dyke: Section South of Brymbo Colliery
Early Medieval · Linear Earthwork

Offa's Dyke: Section South of Brymbo Colliery

Denbighshire, Wales
Cadw SAM DE185
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: Section South of Brymbo Colliery is a linear earthwork forming part of the extensive defensive frontier constructed during the reign of King Offa of Mercia in the late eighth century. This section of the dyke, situated in Denbighshire, represents the engineering ambition of an Early Medieval kingdom seeking to establish a territorial boundary against Welsh principalities to the west. The earthwork comprises a substantial bank with associated ditch, characteristic of the monument's construction across its length, and this particular segment survives as a notable archaeological feature despite later industrial activity in the locality. The monument remains significant for understanding Offa's Dyke as both a military-administrative boundary and a remarkable feat of coordinated labour undertaken during the Anglo-Saxon period.

Offa's Dyke: Section South of Brymbo Colliery is a scheduled monument protected by Cadw under reference DE185. View the official record →

About this monument

Questions & answers

What is Offa's Dyke: Section South of Brymbo Colliery?

Offa's Dyke: Section South of Brymbo Colliery is a linear earthwork forming part of the extensive defensive frontier constructed during the reign of King Offa of Mercia in the late eighth century. It is designated a Scheduled Ancient Monument by Cadw under reference DE185.

What period does Offa's Dyke: Section South of Brymbo Colliery date from?

Offa's Dyke: Section South of Brymbo Colliery 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.

Who is responsible for protecting Offa's Dyke: Section South of Brymbo Colliery?

Offa's Dyke: Section South of Brymbo Colliery 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 DE185.

What other scheduled monuments are near Offa's Dyke: Section South of Brymbo Colliery?

Several scheduled monuments lie within 10 km, including Wat's Dyke: Section extending from Middle Sontley to Black Brook Bridge (7.8 km), Gardden Camp (8.5 km), Wat's Dyke: Section extending from Black Brook Bridge to Pentre-Clawdd (8.7 km).

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