Ancient Monuments

History on the Ground

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Aber-Naint Dyke

A Scheduled Monument in Llanfyllin, Powys

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Latitude: 52.7873 / 52°47'14"N

Longitude: -3.2992 / 3°17'57"W

OS Eastings: 312475

OS Northings: 321873

OS Grid: SJ124218

Mapcode National: GBR 6S.XH2L

Mapcode Global: WH791.965J

Entry Name: Aber-Naint Dyke

Scheduled Date:

Source: Cadw

Source ID: 2618

Cadw Legacy ID: MG024

Schedule Class: Monument

Category: Linear earthwork

Period: Early Medieval

County: Powys

Community: Llanfyllin

Traditional County: Montgomeryshire


The monument consists of the remains of a dyke, a defensive boundary or earthwork, dating to the later prehistoric/medieval period. The earthwork comprises a bank aligned north-west to south-east on a slightly curving course with a ditch on the north side along most of its length. The overall length is about 560m and the height of the bank around 4.0m with a ditch 2.0m deep.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric/medieval defensive organisation and settlement. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. A dyke 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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