LiDAR 1m DTM Hillshade
Satellite Imagery
LiDAR 1m DTM Hillshade
Satellite Imagery
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HER: Clwyd Powys 134 (None)
NMR: SJ 20 NE 5 (306947)
SM: MG011(POW)
NGR: SJ2646505818
X: 326464 Y: 305818 (OSGB36)
Oval, univallate, contour hillfort located NW of the Roman road on the highest point of Long Mountain and high above the River Severn valley and valley of Aylesford Brook, with the confluence of the Severn and River Camlad to S. Moderate surrounding slopes to N, moderate to strong. to S, E and W. Measures c. 200m N-S by 170m, with internal area 1.8ha. Defined by a single, massive, bank and ditch, with traces of a berm separating the two and possible counterscarp. Quarry-scoops within. Simple SSW entrance. Possible modern gap to N. Barrow in interior. Wooded site, owned by CPAT, with long-term management envisaged and geophysical and topographical surveys undertaken 2009-2011 and investigation continuing. 'EIIR' delineated from the air by the use of differing tree types on site, as part of Queen Elizabeth's Jubilee celebrations. Site of early myths and legends, earliest 9th or 10th century saga Canu Llywarch Hen where described as camp of Cadwallon. On 1st Ed. OS map (1883). Undated.
Citizen Science: ✗
Reliability of Data: Confirmed
Reliability of Interpretation: Confirmed
X: -343789 Y: 6917614 (EPSG: 3857)
Longitude: -3.0883086326583755 Latitude: 52.64507138721225 (EPSG:4326)
Country: Wales
Current County or Unitary Authority: Powys
Historic County: Montgomeryshire
Current Parish/Community/Council/Townland: Forden with Leighton and Trelystan
Owned by CPAT. Public. CPAT owned Wooded - felling envisaged. Adjacent television masts affect setting.
| Extant | ✓ |
| Cropmark | ✗ |
| Likely Destroyed | ✗ |
Interior forested 1953. Wooded interior with gorse, scrub and trees on banks.
| Woodland | ✓ |
| Commercial Forestry Plantation | ✗ |
| Parkland | ✗ |
| Pasture (Grazing) | ✗ |
| Arable | ✗ |
| Scrub/Bracken | ✓ |
| Bare Outcrop | ✗ |
| Heather/Moorland | ✗ |
| Heath | ✗ |
| Built-up | ✗ |
| Coastal Grassland | ✗ |
| Other | ✗ |
Oval, univallate, contour hillfort located NW of the Roman road on the highest point of Long Mountain and high above the River Severn valley and valley of Aylesford Brook, with the confluence of the Severn and River Camlad to S. Moderate surrounding slopes to N, moderate to strong. to S, E and W.
| 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: 408.0m
N/A
None.
Reliability: D - None
| Pre 1200BC | ✗ |
| 1200BC - 800BC | ✗ |
| 800BC - 400BC | ✗ |
| 400BC - AD50 | ✗ |
| AD50 - AD400 | ✗ |
| AD400 - AD 800 | ✗ |
| Post AD800 | ✗ |
| Unknown | ✓ |
| Pre Hillfort: | Round barrow within the enclosure. |
| Post Hillfort: | None |
Reference in 9th or 10th century saga Canu Llywarch Hen, where described as camp of Cadwallon. On 1st Ed. OS map (1883). CPAT Montgomeryshire Small enclosures project 1990-9. CPAT S entrance EDM and gradiometer survey, vegetation and animal survey on the ramparts 2009. CPAT gradiometer and off-setting surveys and profiles of W rampart. CPAT topographical survey 2011.
| Other (1883): | OS map. |
| Geophysical Survey (2009): | CPAT. |
| Geophysical Survey (2010): | CPAT. |
| Earthwork Survey (2011): | CPAT. |
| Other (None): | CPAT Montgomeryshire Small enclosures project. |
| 1st Identified Written Reference (None): | Reference in saga Canu Llywarch Hen. |
Quarry scoops. Geophysical surveys 2009 and 2010 - no details. Chance find of stone hammer.
Stream 0.4km outside fort.
| None | ✓ |
| Spring | ✗ |
| Stream | ✗ |
| Pool | ✗ |
| Flush | ✗ |
| Well | ✗ |
| Other | ✗ |
Quarry scoops within.
| 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 | ✗ |
Geophysical surveys 2009 and 2010 - no details.
| No Known Geophysics | ✗ |
| Pits | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✓ |
| Nothing Found | ✗ |
Chance find of stone hammer.
| 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 | ✗ |
Simple SSW entrance. Possible modern gap to N.
| 2: | Possible modern gap to N. |
| 2: | None |
Guard Chambers: ✗
Chevaux de Frise: ✗
| 1. Simple Gap (South west): | None |
Defined by a single, massive, bank and ditch, with traces of a berm separating the two and quarry-scoops within.
| Area 1: | 1.8ha. |
| Total: | 1.8ha. |
Total Footprint Area: Noneha.
None
| ✗ | None |
| ✓ | None |
| NE Quadrant: | 1 |
| SE Quadrant: | 1 |
| SW Quadrant: | 1 |
| NW Quadrant: | 1 |
| Total: | 1 |
| Partial Univallate | ✗ |
| Univallate | ✓ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
| Unknown | ✗ |
| Partial Univallate | ✗ |
| Univallate | ✗ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
Traces of berm between bank and ditch. Possible counterscarp.
| 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 |
| ✓ | None |
Number of Ditches: 1
| ✗ | None |
Collens, J., 1988. Iron Age and Romano-British Settlement in the Upper Severn Valley, unpublished PhD thesis, University of Birmingham.
CPAT 2008. Beacon Ring, CPAT Newsletter, Autumn 2008, 2-5, Welshpool: CPAT.
Musson, C. 2012. Montgomeryshire hillforts and enclosures from the air, in Britnell, W.J. and Silvester, R.J. (eds) Reflections on the past. Essays in honour of Frances Lynch. Cambrian Archaeological Association, 351-368.
Olding, F. 2011. Early Welsh Literature - a window on the Dark Age?, Brycheiniog, 42, 93-100.
Silvester, R.J. and Britnell, W.J. 1993. Montgomeryshire small enclosures project. Summary Report 1993, CPAT Report No 80, Welshpool, Clwyd-Powys Archaeological Trust.
Spurgeon, C.J. 1972. Enclosures of Iron Age type in the Upper Severn Basin, In Lynch, F. and Burgess, C. (eds.) 1972, Prehistoric man in Wales and the West, 327, 5, Bath: Adams and Dart.
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