Wat's Dyke

Wat’s Dyke is an early medieval linear earthwork in northeast Wales and bordering parts of western England. It forms a raised bank and ditch that marks a former frontier line in the post‑Roman/early medieval period.

The dyke comprises earth banks and ditches and can be seen in sections where modern development has not removed it; field visits typically follow visible stretches and surviving earthworks. It is less extensive and less well preserved than Offa’s Dyke but is an important archaeological boundary feature.

Archaeological interpretation places the construction of Wat’s Dyke in the early medieval period and links it to frontier activity between the Anglo‑Saxon kingdom of Mercia and Welsh polities. Dating and attribution have been debated, with a range of proposed dates in the early to middle first millennium AD.

The earthwork runs through the border regions of northeast Wales and adjacent English counties, with surviving sections visible near Wrexham and along routes that follow the England‑Wales frontier.

• Relation to Offa's Dyke: Runs roughly parallel to Offa's Dyke and should be viewed as part of the larger early medieval frontier landscape between Wales and England.