Ancient Monuments

History on the Ground

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Offa's Dyke: Section east of Trelawnyd

A Scheduled Monument in Trelawnyd and Gwaenysgor (Trelawnyd a Gwaenysgor), Flintshire (Sir y Fflint)

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Latitude: 53.303 / 53°18'10"N

Longitude: -3.3518 / 3°21'6"W

OS Eastings: 310012

OS Northings: 379299

OS Grid: SJ100792

Mapcode National: GBR 5Z17.4P

Mapcode Global: WH76H.H73Q

Entry Name: Offa's Dyke: Section E of Trelawnyd

Scheduled Date:

Source: Cadw

Source ID: 3808

Cadw Legacy ID: FL122

Schedule Class: Monument

Category: Linear earthwork

Period: Early Medieval

County: Flintshire (Sir y Fflint)

Community: Trelawnyd and Gwaenysgor (Trelawnyd a Gwaenysgor)

Traditional County: Flintshire


The monument consists of three lengths of a dyke or boundary monument, measuring approximately 80 metres, 180 metres and 100 metres in length. Formerly identified as Offa's Dyke, this stretch forms part of what is now referred to as the Whitford Dyke. Dykes are a defensive boundary or earthwork, dating to the later prehistoric/medieval period. Excavation shows that this stretch consisted of a bank flanked by ditches on either side.

The monument is of national importance for its potential to enhance our knowledge of early medieval defensive organisation and settlement. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. A linear earthwork may be part of a larger cluster of monuments and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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