LiDAR 1m DTM Hillshade
Satellite Imagery
LiDAR 1m DTM Hillshade
Satellite Imagery
Scroll left/right to view further images.
HER: Clwyd Powys 718 (None)
NMR: SH 80 SW (303139)
SM: MG332(POW)
NGR: SH82220136
X: 282220 Y: 301360 (OSGB36)
High, isolated and prominent, partial contour hillfort, located on ridge summit of Fron Goch between Nant Gwydol and Nant Cegir, overlooking Nant Gwydol and stream valley NE to the Afon Dyfi at Glantwymyn. Surrounding rocky slopes moderate to strong to N and W, S precipitous and E very steep. Oval in plan measuring c. 110m NE-SW by 50m at SW end decreasing to 35m wide at NE end, with internal area 0.35ha. Single bank to 1.8m high externally with no evidence of ditch visible. SE formed by top of very steep/precipitous scarp slope. Some linear quarrying, but generally intact. Main entrance 4m wide to NE end, with possible second 2m wide at centre of NW side, but this may be due to quarrying. Indications of possible hut locations in interior, one definite example at NE end of 10m diameter. On 1st Ed. OS map (1887). Minimal investigations, undated.
Citizen Science: ✗
Reliability of Data: Confirmed
Reliability of Interpretation: Confirmed
X: -416377 Y: 6908837 (EPSG: 3857)
Longitude: -3.7403785449686904 Latitude: 52.59720494922039 (EPSG:4326)
Country: Wales
Current County or Unitary Authority: Powys
Historic County: Montgomeryshire
Current Parish/Community/Council/Townland: Glantwymyn
Some quarrying, but generally intact.
| Extant | ✓ |
| Cropmark | ✗ |
| Likely Destroyed | ✗ |
Rough upland grazing. Quarrying.
| Woodland | ✗ |
| Commercial Forestry Plantation | ✗ |
| Parkland | ✗ |
| Pasture (Grazing) | ✓ |
| Arable | ✗ |
| Scrub/Bracken | ✗ |
| Bare Outcrop | ✗ |
| Heather/Moorland | ✗ |
| Heath | ✗ |
| Built-up | ✗ |
| Coastal Grassland | ✗ |
| Other | ✓ |
High, isolated and prominent partial contour hillfort, on ridge summit of Fron Goch between Nant Gwydol and Nant Cegir, overlooking Nant Gwydol and stream valley NE to the Afon Dyfi. Surrounding rocky slopes moderate to strong to N and W, S precipitous and E very steep.
| 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: Hilltop
| North | ✗ |
| Northeast | ✗ |
| East | ✗ |
| Southeast | ✗ |
| South | ✗ |
| Southwest | ✗ |
| West | ✗ |
| Northwest | ✗ |
| Level | ✓ |
Altitude: 282.0m
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 (1887). CPAT Montgomeryshire Small enclosures project 1990-97. CPAT defended enclosures in Montgomeryshire survey 2007-2008.
| 1st Identified Map Depiction (1887): | OS map. |
| Other (2007): | CPAT defended enclosures project 2008. |
| Other (None): | CPAT Montgomeryshire Small enclosures project. |
Indications of possible hut locations in interior, one definite example at NE end of 10m diameter.
Stream 0.45km outside fort.
| None | ✓ |
| Spring | ✗ |
| Stream | ✗ |
| Pool | ✗ |
| Flush | ✗ |
| Well | ✗ |
| Other | ✗ |
Indications of possible hut locations in interior, one definite example at NE end of 10m diameter.
| 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 | ✗ |
Main entrance 4m wide to NE end, with possible second 2m wide at centre of NW side, but this may be due to quarrying.
| 2: | None |
| 2: | Possible second 2m wide at centre of NW side, but this may be due to quarrying. |
Guard Chambers: ✗
Chevaux de Frise: ✗
| 1. Simple Gap (North east): | None |
| 2. Simple Gap (North west): | Possible second gap 2m wide at centre of NW side, but this may be due to quarrying. |
Single bank to 1.8m high externally with no evidence of ditch visible. SE formed by top of very steep/precipitous scarp slope.
| Area 1: | 0.35ha. |
| Total: | 0.35ha. |
Total Footprint Area: Noneha.
None
| ✗ | None |
| ✗ | None |
| NE Quadrant: | 1 |
| SE Quadrant: | 0 |
| 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 | ✗ |
None
| 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 visible. |
Number of Ditches: 0
| ✗ | None |
Hankinson, R. 2008. Defended enclosures in Montgomeryshire. A further study. Project Report. CPAT Report No 918, Welshpool: Clwyd-Powys Archaeological Trust.
Royal Commission on the Ancient and Historical Monuments and Constructions in Wales and Monmouthshire, 1911. An Inventory of the Ancient Monuments in Wales and Monmouthshire, I, County of Montgomery, No. 160, London: HMSO.
Silvester, R.J. and Britnell, W.J. 1993. Montgomeryshire small enclosures project. Summary Report 1993, CPAT Report No 80, Welshpool, Clwyd-Powys Archaeological Trust.
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