LiDAR 1m DTM Hillshade
Satellite Imagery
LiDAR 1m DTM Hillshade
Satellite Imagery
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HER: Clwyd Powys 452 (None)
NMR: SO 03 NW 3 (92048)
SM: BR053
NGR: SO 0090 3664
X: 300900 Y: 236640 (OSGB36)
Very high, elongated, hilltop and oval, contour hillfort sited above the Afon Honddu and on the interfluve between the Honddu and Afon Ysgir Fawr at Merthyr Cynog. Steep surrounding slopes on N, S and E steep, W moderate to strong. Measures 135m by 44m with internal area 0.48ha. Defined by natural defences on SE with a single curving rampart on the other sides. There are additional ramparts on the NE (where widely spaced at 32m) and counterscarp on SW where ditch visible. Ditches rock-cut and the ramparts mainly stone and rubble. A quarry ditch is visible behind the bank on the SW. There are indications that the site was unfinished. Only entrance appears to have been on the NE side. Possible hut platform to the NE (damaged) and modern pits are in evidence. Badly affected by ploughing. On 1st Ed. OS map (1888). Few investigations. Undated.
Citizen Science: ✗
Reliability of Data: Confirmed
Reliability of Interpretation: Confirmed
X: -383564 Y: 6803609 (EPSG: 3857)
Longitude: -3.4456125604482035 Latitude: 52.019264610731256 (EPSG:4326)
Country: Wales
Current County or Unitary Authority: Powys
Historic County: Brecknockshire
Current Parish/Community/Council/Townland: Merthyr Cynog
Badly affected by ploughing.
| Extant | ✓ |
| Cropmark | ✗ |
| Likely Destroyed | ✗ |
Rough grazing with bracken.
| Woodland | ✗ |
| Commercial Forestry Plantation | ✗ |
| Parkland | ✗ |
| Pasture (Grazing) | ✓ |
| Arable | ✗ |
| Scrub/Bracken | ✓ |
| Bare Outcrop | ✗ |
| Heather/Moorland | ✗ |
| Heath | ✗ |
| Built-up | ✗ |
| Coastal Grassland | ✗ |
| Other | ✗ |
Very high, elongated, hilltop and oval, contour hillfort sited above the Afon Honddu and on the interfluve between the Honddu and Afon Ysgir Fawr .Steep surrounding slopes on N, S and E steep, W moderate to strong.
| Contour Fort | ✓ |
| Partial Contour Fort | ✗ |
| Promontory Fort | ✗ |
| Hillslope Fort | ✗ |
| Level Terrain Fort | ✗ |
| Marsh Fort | ✗ |
| Multiple Enclosure Fort | ✗ |
| Hilltop | ✓ |
| Coastal Promontory | ✗ |
| Inland Promontory | ✗ |
| Valley Bottom | ✗ |
| Knoll/Hillock/Outcrop | ✗ |
| Ridge | ✗ |
| Cliff/Plateau-edge/Scarp | ✗ |
| Hillslope | ✗ |
| Lowland | ✗ |
| Spur | ✗ |
Dominant Topographic Feature: Hill top
| North | ✗ |
| Northeast | ✗ |
| East | ✗ |
| Southeast | ✗ |
| South | ✗ |
| Southwest | ✗ |
| West | ✗ |
| Northwest | ✗ |
| Level | ✓ |
Altitude: 415.0m
N/A
None.
Reliability: D - None
| Pre 1200BC | ✗ |
| 1200BC - 800BC | ✗ |
| 800BC - 400BC | ✗ |
| 400BC - AD50 | ✗ |
| AD50 - AD400 | ✗ |
| AD400 - AD 800 | ✗ |
| Post AD800 | ✗ |
| Unknown | ✓ |
| Pre Hillfort: | None |
| Post Hillfort: | None |
On 1st Ed. OS map (1888). RCAHMW investigation 1968. CPAT defended enclosures survey 2006-2007.
| 1st Identified Map Depiction (1888): | OS map. |
| Other (1968): | RCAHMW investigation. |
| Other (None): | CPAT defended enclosures survey |
Quarry ditch on SW. Possible hut platform to the NE (damaged) and modern pits are in evidence.
Stream 0.4km outside fort.
| None | ✓ |
| Spring | ✗ |
| Stream | ✗ |
| Pool | ✗ |
| Flush | ✗ |
| Well | ✗ |
| Other | ✗ |
Quarry ditch on SW. Possible hut platform to the NE (damaged) and modern pits are in evidence.
| No Known Features | ✗ |
| Round Stone Structures | ✗ |
| Rectangular Stone Structures | ✗ |
| Curvilinear Platforms | ✓ |
| Other Roundhouse Evidence | ✗ |
| Pits | ✗ |
| Quarry Hollows | ✓ |
| Other | ✓ |
None
| No Known Excavation | ✓ |
| Pits | ✗ |
| Postholes | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
| Nothing Found | ✗ |
None
| No Known Geophysics | ✓ |
| Pits | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
| Nothing Found | ✗ |
None
| No Known Finds | ✓ |
| Pottery | ✗ |
| Metal | ✗ |
| Metalworking | ✗ |
| Human Bones | ✗ |
| Animal Bones | ✗ |
| Lithics | ✗ |
| Environmental | ✗ |
| Other | ✗ |
None
| APs Not Checked | ✓ |
| None | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Pits | ✗ |
| Postholes | ✗ |
| Roads/Tracks | ✗ |
| Other | ✗ |
Only entrance appears to have been on the NE side.
| 1: | None |
| 2: | None |
Guard Chambers: ✗
Chevaux de Frise: ✗
| 1. Simple Gap (North east): | None |
Defined by natural defences on SE with a single curving rampart on the other sides. There are additional ramparts on the NE (where widely spaced at 32m) and counterscarp on SW where ditch visible. Ditches rock-cut and the ramparts mainly stone and rubble
| Area 1: | 0.48ha. |
| Total: | 0.48ha. |
Total Footprint Area: Noneha.
None
| ✗ | None |
| ✗ | Natural defences on SE. |
| NE Quadrant: | 2 |
| SE Quadrant: | 0 |
| SW Quadrant: | 1 |
| NW Quadrant: | 1 |
| Total: | 2 |
| Partial Univallate | ✓ |
| Univallate | ✗ |
| Partial Bivallate | ✓ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
| Unknown | ✗ |
| Partial Univallate | ✗ |
| Univallate | ✗ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
Possibly unfinished. Ditches rock-cut and the ramparts mainly stone and rubble. Counterscarp visible on SW.
| None | ✗ |
| Earthen Bank | ✓ |
| Stone Wall | ✗ |
| Rubble | ✓ |
| Wall-walk | ✗ |
| Evidence of Timber | ✗ |
| Vitrification | ✗ |
| Other Burning | ✗ |
| Palisade | ✗ |
| Counter Scarp Bank | ✓ |
| Berm | ✗ |
| Unfinished | ✓ |
| Other | ✗ |
None
| None | ✗ |
| Earthen Bank | ✗ |
| Stone Wall | ✗ |
| Murus Duplex | ✗ |
| Timber-framed | ✗ |
| Timber-laced | ✗ |
| Vitrification | ✗ |
| Other Burning | ✗ |
| Palisade | ✗ |
| Counter Scarp Bank | ✗ |
| Berm | ✗ |
| Unfinished | ✗ |
| No Known Excavation | ✓ |
| Other | ✗ |
| ✗ | None |
| ✓ | Ditches rock cut visible on SW. |
Number of Ditches: 1
| ✗ | None |
Savory, H.N. 1952. List of Hill-forts and other earthworks in Wales, III, Brecknockshire, Bull Board Celtic Stud, 14, 72.
Silvester, B. 2007. The Clwyd-Powys Archaeological Trust. Defended enclosures in Brecknock, CPAT Report No 859, Welshpool: CPAT.
RCAHMW 1986. An inventory of the ancient monuments in Brecknock (Brycheiniog). The Prehistoric and Roman monuments, Vol 1, Part 2, Hill-forts and Roman remains, HF 36, London: HMSO.
Atlas of Hillforts:
Wikidata:
This work is licensed under CC BY-SA 4.0
and should be cited as:
Lock, Gary and Ralston, Ian. 2024. Atlas of Hillforts of Britain and Ireland. Available at: https://hillforts.arch.ox.ac.uk
Document Version 1.1