Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

Buarth y Gaer, Mynydd y Gaer

A Scheduled Monument in Baglan, Neath Port Talbot (Castell-nedd Port Talbot)

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 51.6276 / 51°37'39"N

Longitude: -3.7849 / 3°47'5"W

OS Eastings: 276548

OS Northings: 193599

OS Grid: SS765935

Mapcode National: GBR H3.8QPC

Mapcode Global: VH5GV.BCX3

Entry Name: Buarth y Gaer, Mynydd y Gaer

Scheduled Date:

Source: Cadw

Source ID: 2859

Cadw Legacy ID: GM054

Schedule Class: Defence

Category: Hillfort

Period: Prehistoric

County: Neath Port Talbot (Castell-nedd Port Talbot)

Community: Baglan

Traditional County: Glamorgan


The monument comprises the remains of a hillfort which probably dates to the Iron Age period (c. 800 BC - AD 74). Hillforts are usually located on hilltops and surrounded by a single or multiple earthworks of massive proportions. Hillforts must have formed symbols of power within the landscape, while their function may have had as much to do with ostentation and display as defence.

Buarth y Gaer is a simple contour fort at 300m above OD on the summit of Mynydd y Gaer, 3km east of Briton Ferry. It is oval in plan and measures 135m long from east to west by 107m wide enclosing 1.1ha, defended by a single bank with external ditch, of average overall width about 10m. The defences are best preserved on the east and north-east where the bank is about 0.7m high internally, and nearly 2m externally above the bottom of the ditch. At the west end is a simple entrance 12m wide. Narrow gaps in the bank on the north appear to be modern. The defences have been partly destroyed on the south by modern quarrying. Within the enclosure, on the highest point of the hill, is a cairn (Gm 054B), presumably earlier than the hill-fort.

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

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.