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Cof Cymru: National Historic Assets of Wales · Wales

Gilfach y Dwn Fawr Defended Enclosure

Ystrad Fflur, Ceredigion, Wales

A scheduled monument in Ystrad Fflur, Ceredigion, recorded as Hillfort (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Gilfach y Dwn Fawr Defended Enclosure, Ystrad Fflur, Ceredigion, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Scheduled monument
Site type
Hillfort
Period
Prehistoric
Date of designation
25 January 2008
Community
Ystrad Fflur
Unitary authority
Ceredigion
Country
Wales
Coordinates (centre of the scheduled area)
52.26662, -3.85715
SAM number
CD269
Cadw record number
1258

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 178 Llanilar (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 14. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

The monument comprises the remains of a small hillfort, which probably dates to the Iron Age period (c. 800 BC - AD 74, the Roman conquest of Wales). It is located on the summit of a prominent outcrop that is defended by naturally steep slopes, particularly on the NW and SE sides. The hillfort is oval in shape and measures 150m NE-SW by 100m transversely. The outcrop is defended by a bank around the base of the weaker S-facing slope. Further upslope, a second bank flanks a SW-facing inturned entrance. The NE side is defined by a substantial cut terrace. At least nine hut platforms are visible on the SW facing slope between the entrance and the summit.

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 an area around within which related evidence may be expected to survive. It is an irregular polygon in shape on plan and measures 238m NE-SW by 118m transversely.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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