Ancient Monuments

History on the Ground

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A Scheduled Monument in Llangathen, Carmarthenshire (Sir Gaerfyrddin)

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Latitude: 51.8747 / 51°52'29"N

Longitude: -4.0737 / 4°4'25"W

OS Eastings: 257344

OS Northings: 221605

OS Grid: SN573216

Mapcode National: GBR DS.S05W

Mapcode Global: VH4J2.B4SN

Entry Name: Grongaer

Scheduled Date:

Source: Cadw

Source ID: 2110

Cadw Legacy ID: CM082

Schedule Class: Defence

Category: Hillfort

Period: Prehistoric

County: Carmarthenshire (Sir Gaerfyrddin)

Community: Llangathen

Traditional County: Carmarthenshire


The monument comprises the remains of an earthwork enclosure set located on the isolated summit of a north east to south west ridge above the floodplain of the River Tywi. The date or precise nature of the enclosure is unknown, but it is likely to be later prehistoric. It is defined by a single bank measuring between 3 and 4 meters high with traces of an accompanying ditch. A simple entrance at the south west corner is probably original.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence 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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