Ancient Monuments

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Gro Tump Mound & Bailey Castle

A Scheduled Monument in Newtown and Llanllwchaiarn (Y Drenewydd a Llanllwchaearn), Powys

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Latitude: 52.5208 / 52°31'14"N

Longitude: -3.2937 / 3°17'37"W

OS Eastings: 312317

OS Northings: 292224

OS Grid: SO123922

Mapcode National: GBR 9T.G7RJ

Mapcode Global: VH683.VWMX

Entry Name: Gro Tump Mound & Bailey Castle

Scheduled Date:

Source: Cadw

Source ID: 2624

Cadw Legacy ID: MG059

Schedule Class: Defence

Category: Motte & Bailey

Period: Medieval

County: Powys

Community: Newtown and Llanllwchaiarn (Y Drenewydd a Llanllwchaearn)

Built-Up Area: Newtown

Traditional County: Montgomeryshire


The monument comprises the remains of a motte and bailey castle, a military stronghold built during the medieval period. A motte and bailey castle comprises a large conical or pyramidal mound of soil or stone (the motte) surrounded by, or adjacent to, one or more embanked enclosures (the bailey). Both may be surrounded by wet or dry ditches and could be further strengthened with palisades, revetments, and/or a tower on top of the motte.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive organisation. The well-preserved monument forms an important element within the wider medieval context and the structure itself may be expected to contain archaeological information relating to chronology, building techniques and functional detail.

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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