LiDAR 1m DTM Hillshade
Satellite Imagery
LiDAR 1m DTM Hillshade
Satellite Imagery
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HER: Clwyd Powys 4007 (None)
NMR: SO 01 NE 1 (305679)
SM: None
NGR: SO0895019440
X: 308950 Y: 219440 (OSGB36)
High, univallate, hillslope fort at top of E-facing slope of hill between Nant Tarthwynni and smaller valley on S at Talybont-on-Usk. Steep surrounding slopes to N to Nant Tarthwynni. Originally had commanding views. The larger and lower Nant Tarthwynni East hillslope fort (Atlas No.1336) 60m to NE. Sub-rectangular measuring c. 63m N-S by 55m with internal area 0.26ha. Much reduced and damaged through forestry operations and now defined by vestiges of earth and stone bank, to 1.1m high, and ditch, to c. 0.5m deep, on W and by slight ditch on E. E entrance downslope. Nearly all within forestry plantation, the boundary of which reflects the former boundary shown on the late 19th century Ordnance Survey maps. N tip lies in open common. Minimal investigations, undated.
Citizen Science: ✗
Reliability of Data: Confirmed
Reliability of Interpretation: Confirmed
X: -370001 Y: 6775940 (EPSG: 3857)
Longitude: -3.3237756646507832 Latitude: 51.866042290974484 (EPSG:4326)
Country: Wales
Current County or Unitary Authority: Powys
Historic County: Brecknockshire
Current Parish/Community/Council/Townland: Talybont-on-Usk
Badly damaged through forestry operations 1990 and rampart much reduced.
| Extant | ✓ |
| Cropmark | ✗ |
| Likely Destroyed | ✗ |
Most of site in Forestry Commission plantation. N tip lies on open common moorland.
| Woodland | ✗ |
| Commercial Forestry Plantation | ✓ |
| Parkland | ✗ |
| Pasture (Grazing) | ✗ |
| Arable | ✗ |
| Scrub/Bracken | ✗ |
| Bare Outcrop | ✗ |
| Heather/Moorland | ✓ |
| Heath | ✗ |
| Built-up | ✗ |
| Coastal Grassland | ✗ |
| Other | ✗ |
High, sub-rectangular, univallate, hillslope fort at top of E-facing slope of hill between Nant Tarthwynni and smaller valley on S. Steep surrounding slopes to N to Nant Tarthwynni. Originally had commanding views.
| 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: Hillslope
| North | ✗ |
| Northeast | ✗ |
| East | ✓ |
| Southeast | ✗ |
| South | ✗ |
| Southwest | ✗ |
| West | ✗ |
| Northwest | ✗ |
| Level | ✗ |
Altitude: 411.0m
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 |
RCAHMW investigation 1980. CPAT defended enclosures survey 2006-2007.
| Other (1980): | RCAHMW investigation. |
| Other (None): | CPAT defended enclosures survey |
None.
None
| None | ✓ |
| Spring | ✗ |
| Stream | ✗ |
| Pool | ✗ |
| Flush | ✗ |
| Well | ✗ |
| Other | ✗ |
None
| 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 | ✗ |
E entrance downslope. Modern gaps.
| 3: | None |
| 2: | None |
Guard Chambers: ✗
Chevaux de Frise: ✗
| 1. Simple Gap (East): | None |
Much reduced and damaged through forestry operations and now defined by vestiges of earth and stone bank, to 1.1m high, and ditch, to c. 0.5m deep, on W and by slight ditch on E.
| Area 1: | 0.26ha. |
| Total: | 0.26ha. |
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 | ✗ |
Earth and stone bank.
| 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 |
| ✓ | Ditch, to c. 0.5m deep, on W and slight ditch on E. |
Number of Ditches: 1
| ✗ | None |
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 22, London: HMSO.
Savory, H.N. 1954. List of hill-forts and other earthworks in Wales and Monmouthshire. Additions and corrections to Sections I-III, Bull Board Celtic Stud, 15 (1952-54), 230.
Silvester, B. 2007. The Clwyd-Powys Archaeological Trust. Defended enclosures in Brecknock, CPAT Report No 859, Welshpool: CPAT.
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