Ancient Monuments

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St Illtyd Castle Mound

A Scheduled Monument in Llanhilleth (Llanhiledd), Blaenau Gwent

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Coordinates

Latitude: 51.7106 / 51°42'38"N

Longitude: -3.1343 / 3°8'3"W

OS Eastings: 321725

OS Northings: 201923

OS Grid: SO217019

Mapcode National: GBR J0.3DB4

Mapcode Global: VH6D8.M8DJ

Entry Name: St Illtyd Castle Mound

Scheduled Date: 14 May 1952

Source: Cadw

Source ID: 2381

Cadw Legacy ID: MM141

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Blaenau Gwent

Community: Llanhilleth (Llanhiledd)

Traditional County: Monmouthshire

Description

The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). The monument consists of a steep-sided mound, 35m in diameter, with a flat summit 17m in diameter. On the S side the mound is 3.5m high with a ditch or quarry hole, 2m wide and 1.5m deep, towards the W end. The W side is 5m high and very steep. At its base is a flat-bottomed ditch 4m wide and 1m deep which stops halfway along the N side. On the NE side there is a hollow 8m long and 0.6m deep. A retaining wall has been built along the base of the motte on the E side. A path leads up the mound from the N side to the summit.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is well-preserved and an important relic of the medieval landscape. It retains significant archaeological potential, with a strong probability of the presence of both structural evidence and intact associated deposits.

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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