Ancient Monuments

History on the Ground

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Offa's Dyke: Section from Rhydwen-Fach to Coed Pen-y-Gelli

A Scheduled Monument in Whitford (Chwitffordd), Flintshire (Sir y Fflint)

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Latitude: 53.2789 / 53°16'44"N

Longitude: -3.3001 / 3°18'0"W

OS Eastings: 313410

OS Northings: 376560

OS Grid: SJ134765

Mapcode National: GBR 5ZDJ.B9

Mapcode Global: WH76J.8VS5

Entry Name: Offa's Dyke: Section from Rhydwen-Fach to Coed Pen-y-Gelli

Scheduled Date:

Source: Cadw

Source ID: 2210

Cadw Legacy ID: FL109

Schedule Class: Monument

Category: Linear earthwork

Period: Early Medieval

County: Flintshire (Sir y Fflint)

Community: Whitford (Chwitffordd)

Traditional County: Flintshire


The monument consists of a 435 metre length of Offa's Dyke, a presumed AD 8th century boundary monument, and is located in the second field to the south-east of Rhydwen Fach. The dyke is visible as a 1.8m wide bank, measuring approximately 0.6m high with traces of a ditch on both sides. In the next field the dyke is still visible, but has been ploughed. In Coed Pen-y-gelli, the bank measures approximately 1.2m high. This section of the dyke ends in a mound.

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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