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HER:  Oxfordshire 1621 (MOX23)
NMR:  SP 33 NE 10 (335064)
SM:  1006370
NGR:  SP 3879 3566
X:  438795  Y:  235665  (OSGB36)
On Tadmarton Heath, a roughly circular site enclosing c.1.9ha, situated on a plateau with good views all around. Bivallate for whole circuit with a possible third rampart to the N, original in-turned entrance to the E. Inner and outer ramparts survive to c.2m high and c.10m wide in places. A road runs NE to SW through the middle of the site (on 1st ed OS map of 1881) and the area S of the road has been damaged by the construction of a golf course (established in 1922). The ramparts survive best to the N and NW. No serious interventions, Iron Age and Romano-British pottery found during ad hoc diggings.
Citizen Science:  ✓
Reliability of Data:  Confirmed
Reliability of Interpretation:  Confirmed
X:  -159865  Y:  6803384  (EPSG: 3857)
Longitude:  -1.4360925796622575  Latitude:  52.018018261073834  (EPSG:4326)
Country:  England; None
Current County or Unitary Authority:  Oxfordshire
Historic County:  Oxfordshire
Current Parish/Community/Council/Townland:  Tadmarton; Swalcliffe
Site is cut by a road NE to SW. Outer rampart ploughed away to north and west. South and East damaged by golf course greens. Inner rampart visible for most of its circuit.
| Extant   | ✓ |
| Cropmark   | ✗ |
| Likely Destroyed   | ✗ |
None
| Woodland   | ✗ |
| Commercial Forestry Plantation   | ✗ |
| Parkland   | ✗ |
| Pasture (Grazing)   | ✗ |
| Arable   | ✓ |
| Scrub/Bracken   | ✗ |
| Bare Outcrop   | ✗ |
| Heather/Moorland   | ✗ |
| Heath   | ✓ |
| Built-up   | ✗ |
| Coastal Grassland   | ✗ |
| Other   | ✗ |
Approximately follows the contours of a low hill
| Contour Fort   | ✗ |
| Partial Contour Fort   | ✓ |
| Promontory Fort   | ✗ |
| Hillslope Fort   | ✗ |
| Level Terrain Fort   | ✗ |
| Marsh Fort   | ✗ |
| Multiple Enclosure Fort   | ✗ |
Approximately follows the contours of a low hill
| Hilltop   | ✓ |
| Coastal Promontory   | ✗ |
| Inland Promontory   | ✗ |
| Valley Bottom   | ✗ |
| Knoll/Hillock/Outcrop   | ✗ |
| Ridge   | ✗ |
| Cliff/Plateau-edge/Scarp   | ✗ |
| Hillslope   | ✗ |
| Lowland   | ✗ |
| Spur   | ✗ |
Dominant Topographic Feature:  On a low hill but with good views in all directions
| North   | ✗ |
| Northeast   | ✗ |
| East   | ✗ |
| Southeast   | ✗ |
| South   | ✗ |
| Southwest   | ✗ |
| West   | ✗ |
| Northwest   | ✗ |
| Level   | ✓ |
Altitude:  195.0m
Boundary Type:  Parish/Townland
Late Iron Age and Romano-British pottery, RB coin, from ad hoc surface finds and when constructing the golf course
Reliability:  C - Low
| Pre 1200BC   | ✗ |
| 1200BC - 800BC   | ✗ |
| 800BC - 400BC   | ✗ |
| 400BC - AD50   | ✓ |
| AD50 - AD400   | ✗ |
| AD400 - AD 800   | ✗ |
| Post AD800   | ✗ |
| Unknown   | ✗ |
| Pre Hillfort:   | None |
| Post Hillfort:   | None |
| Artefactual:   | Iron Age and Romano-British pottery |
| Morphology/Earthwork/Typology:   | Form of bivallate hillfort |
On First edition OS map, in Plot 1705. Amateur excavations, no details other than some finds.
| 1st Identified Written Reference (1705):   | Plot |
| 1st Identified Map Depiction (1881):   | 1st Ed. OS |
No evidence other than surface finds
A spring c.300m away
| 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   | ✗ |
Iron Age and Romano-British pottery from ad hoc diggings
| 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   | ✗ |
Possible inturned entrance on E side
| 4:   | Road runs NE-SW through the site (existed in 1881, 1st Ed OS). Agricultural break through at NW. Also two small golf paths through ramparts. |
| 2:   | Possible inturned entrance on E side |
Guard Chambers:  ✗
Chevaux de Frise:  ✗
| 1. In-turned (East):   | None |
Bivallate plus two ditches for whole circuit, inner and outer ramparts up to 2m high and 10m wide in places. Possibly third rampart to the N according to the VCH but not visible on the ground.
| Area 1:   | 1.9ha. |
| Total:   | 1.9ha. |
Total Footprint Area:  Noneha.
Possible third rampart to N according to VCH but not visible on the ground
| ✗   | None |
| ✓   | Inner rampart well preserved, outer destroyed in places by ploughing and golf course |
| NE Quadrant:   | 2 |
| SE Quadrant:   | 2 |
| SW Quadrant:   | 2 |
| NW Quadrant:   | 2 |
| Total:   | 2 |
| Partial Univallate   | ✗ |
| Univallate   | ✗ |
| Partial Bivallate   | ✗ |
| Bivallate   | ✓ |
| Partial Multivallate   | ✗ |
| Multivallate   | ✗ |
| Unknown   | ✗ |
| Partial Univallate   | ✗ |
| Univallate   | ✗ |
| Partial Bivallate   | ✗ |
| Bivallate   | ✗ |
| Partial Multivallate   | ✗ |
| Multivallate   | ✗ |
Earthen bank
| None   | ✗ |
| Earthen Bank   | ✓ |
| Stone Wall   | ✗ |
| Rubble   | ✗ |
| Wall-walk   | ✗ |
| Evidence of Timber   | ✗ |
| Vitrification   | ✗ |
| Other Burning   | ✗ |
| Palisade   | ✗ |
| Counter Scarp Bank   | ✗ |
| Berm   | ✗ |
| Unfinished   | ✗ |
| Other   | ✗ |
Stone revetment for inner rampart revealed when constructing the golf course.
| 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 |
| ✓   | Two ditches visible as hollows for much of the circuit, especially the inner |
Number of Ditches:  2
| ✗   | None |
Manning, P. and Leeds, E.T. 1921. An archaeological survey of Oxfordshire. London: Society of Antiquaries.
Page, W. (ed) 1907. The Victoria History of the County of Oxford, Vol II. London, 316-7.
Plot, R. 1705. The natural history of Oxfordshire, 342.
Sutton, J.E.G. 1966. Iron-Age hill-forts and some other earthworks in Oxfordshire, Oxoniensia, 31, 28-42.
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