Ancient Monuments

History on the Ground

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

Cae Castell (Rhyndwyclydach Medieval Earthwork)

A Scheduled Monument in Mawr, Swansea (Abertawe)

More Photos »
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: 51.7261 / 51°43'34"N

Longitude: -3.8921 / 3°53'31"W

OS Eastings: 269412

OS Northings: 204739

OS Grid: SN694047

Mapcode National: GBR GZ.K7JF

Mapcode Global: VH4JR.HW84

Entry Name: Cae Castell (Rhyndwyclydach Medieval Earthwork)

Scheduled Date: 16 October 1991

Source: Cadw

Source ID: 3586

Cadw Legacy ID: GM439

Schedule Class: Monument

Category: Earthwork (unclassified)

Period: Medieval

County: Swansea (Abertawe)

Community: Mawr

Traditional County: Glamorgan


The monument consists of the remains of an earthwork probably dating to the medieval period. Square in plan, it measures approx. 18 x 21m and is situated 183m above OD on the western edge of a deep ravine. Interestingly, it lies within a field recorded on early tithe maps as 'Cae castell' - castle field. The west, south and north sides are enclosed by a broad shallow ditch with bank. The east side is defined by the edge of the ravine.

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

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.