The Offa's Dyke Collaboratory

A Research Network for Offa's Dyke, Wat's Dyke and Early Medieval Western Britain

Wat’s Dyke at Erddig Castle

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Wat’s Dyke crossed the Clywedog at its confluence with the Black Brook. This strategic location endured, and the promontory south of the valley overlooking both brook and river was selected as the site of an Anglo-Norman castle in the late 11th century, possibly built by Hugh de Avranches, Earl of Chester.

Despite being constructions for contrasting times and built centuries apart, both Wat’s Dyke and Erddig Castle made use of the topography to control and dominate the Anglo-Welsh borderland. Are they both stages in the colonisation of the landscape: first by the Mercians, later by the Normans?

Go North to Wat’s Dyke at Court Wood

Go South to Wat’s Dyke at Big Wood

View this location on the map

Access

On foot: 750m+ walk from Erddig Hall. No bicycle and partial mobility scooter access.

By car: park at Erddig National Trust main car park.