Atlas of Hillforts of Britain and Ireland

EN4268 Demelza Castle, Cornwall (Demelsa Castle)

LiDAR 1m DTM Hillshade

LiDAR 1m DTM Hillshade

Satellite Imagery

Satellite Imagery

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HER:  Cornwall and Scilly 21483 (None)

NMR:  SW 96 SE 6 (430589)

SM:  1005452

NGR:  SW977636

X:  197725  Y:  63650  (OSGB36)

Summary

Small, possible bivallate, contour hillfort or round, located on small knoll on upper slopes of very prominent ridge overlooking valley of a tributary of the River Camel, with stream confluences to N and E, in central Cornwall. Moderate slopes. Roughly oval in shape, of c. 1.2ha, measuring c. 20m N-S by 110m E-W. Defined by two ramparts with largely infilled ditches. Inner rampart has steep, almost perpendicular, bank c. 2.3m to 3.6m high. Where visible, outer rampart to c. 4.3m high on N, steep slope, side and 1.3m on gentler E. Steep natural slope utilised as outer defence on S. Ditch and outer bank destroyed by road on SW and W. Any original entrance not visible. Antiquarian reference to third rampart suggested by Hals (1750) cannot be identified and doubtful whether ever existed. Alleged artificial mounds in interior not visible, but ploughed. Interior improved pasture with wooded surrounds. On 1st Ed. OS map (1881). Undated.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Unconfirmed

Location

X:  -539893  Y:  6522424  (EPSG: 3857)

Longitude:  -4.849942855942567  Latitude:  50.437693119170966  (EPSG:4326)

Country:  England

Current County or Unitary Authority:  Cornwall

Historic County:  Cornwall

Current Parish/Community/Council/Townland:  St Wenn

Monument Condition

Fair. Interior ploughed. Ditch and outer bank destroyed by road on SW and W.

Condition:
Extant   ✓
Cropmark   ✗
Likely Destroyed   ✓

Land Use

Interior improved pasture with wooded surrounds. Road.

Current Use:
Woodland   ✗
Commercial Forestry Plantation   ✗
Parkland   ✗
Pasture (Grazing)   ✓
Arable   ✗
Scrub/Bracken   ✗
Bare Outcrop   ✗
Heather/Moorland   ✗
Heath   ✗
Built-up   ✗
Coastal Grassland   ✗
Other   ✓

Landscape

Hillfort Type

Small, possible bivallate, contour hillfort or round, located on small knoll on upper slopes of very prominent ridge overlooking valley of a tributary of the River Camel, with stream confluences to N and E, in central Cornwall. Moderate slopes.

Type:
Contour Fort   ✓
Partial Contour Fort   ✗
Promontory Fort   ✗
Hillslope Fort   ✗
Level Terrain Fort   ✗
Marsh Fort   ✗
Multiple Enclosure Fort   ✗

Topographic Position

Position:
Hilltop   ✗
Coastal Promontory   ✗
Inland Promontory   ✗
Valley Bottom   ✗
Knoll/Hillock/Outcrop   ✓
Ridge   ✓
Cliff/Plateau-edge/Scarp   ✗
Hillslope   ✗
Lowland   ✗
Spur   ✗

Dominant Topographic Feature:  Small knoll.

Aspect:
North   ✗
Northeast   ✗
East   ✗
Southeast   ✗
South   ✗
Southwest   ✗
West   ✗
Northwest   ✗
Level   ✓

Altitude:  107.0m

Boundary

N/A


Dating Evidence

None.

Reliability:  D - None

Principal Activity:
Pre 1200BC   ✗
1200BC - 800BC   ✗
800BC - 400BC   ✗
400BC - AD50   ✗
AD50 - AD400   ✗
AD400 - AD 800   ✗
Post AD800   ✗
Unknown   ✓

Other Activity:
Pre Hillfort:   None
Post Hillfort:   None

Evidence:No related records

Investigation History

Name first recorded 1309 and derived from the Cornish 'dyn' meaning fort. Mention by William Hals 1750. On 1st Ed. OS map (1881). Field investigation Ordnance Survey 1977.

Investigations:
1st Identified Written Reference (1309):   Name first recorded 1309 and derived from the Cornish 'dyn' meaning fort
Other (1750):   Mention by William Hals.
1st Identified Map Depiction (1881):   OS map.
Other (1977):   Field investigation OS.

Interior Features

Alleged artificial mounds in interior not visible, but ploughed

Water Source

None

Source:
None   ✓
Spring   ✗
Stream   ✗
Pool   ✗
Flush   ✗
Well   ✗
Other   ✗

Surface

Alleged artificial mounds in interior not visible, but ploughed

Interior Features (Surface):
No Known Features   ✗
Round Stone Structures   ✗
Rectangular Stone Structures   ✗
Curvilinear Platforms   ✗
Other Roundhouse Evidence   ✗
Pits   ✗
Quarry Hollows   ✗
Other   ✓

Excavation

None

Interior Features (Excavation):
No Known Excavation   ✓
Pits   ✗
Postholes   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Geophysics

None

Interior Features (Geophysics):
No Known Geophysics   ✓
Pits   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Finds

None

Interior (Finds):
No Known Finds   ✓
Pottery   ✗
Metal   ✗
Metalworking   ✗
Human Bones   ✗
Animal Bones   ✗
Lithics   ✗
Environmental   ✗
Other   ✗

Aerial

None

Interior Features (Aerial):
APs Not Checked   ✓
None   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Pits   ✗
Postholes   ✗
Roads/Tracks   ✗
Other   ✗

Entrances

Cannot be identified.

Total Number of Breaks Through Ramparts:  
0:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:No related records

Enclosing Works

Defined by two ramparts with largely infilled ditches. Inner rampart has steep, almost perpendicular, bank c. 2.3m to 3.6m high. Where visible, outer rampart to c. 4.3m high on N, steep slope, side and 1.3m on gentler E. Steep natural slope utilised as outer defence on S. Ditch and outer bank destroyed by road on SW and W.

Enclosed Area:
Area 1:   1.2ha.
Total:   1.2ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✓   It is possible that the second rampart is a counterscarp bank, but this cannot be verified as ditches largely infilled.

Number of Ramparts:  
NE Quadrant:   2
SE Quadrant:   1
SW Quadrant:   1
NW Quadrant:   2
Total:   2

Morphology

Current Morphology:
Partial Univallate   ✓
Univallate   ✗
Partial Bivallate   ✓
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗
Unknown   ✗

Detailed Morphology:
Partial Univallate   ✗
Univallate   ✗
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗

Surface Evidence

It is possible that the second rampart is a counterscarp bank, but this cannot be verified.

Enclosing Works (Surface):
None   ✗
Earthen Bank   ✓
Stone Wall   ✗
Rubble   ✗
Wall-walk   ✗
Evidence of Timber   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✗
Unfinished   ✗
Other   ✗

Excavated Evidence

None

Enclosing Works (Excavation):
None   ✗
Earthen Bank   ✗
Stone Wall   ✗
Murus Duplex   ✗
Timber-framed   ✗
Timber-laced   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✗
Unfinished   ✗
No Known Excavation   ✓
Other   ✗

Other

Gang Working:
✗   None

Ditches:
✓   Ditches largely infilled and buried features.

Number of Ditches:  2

Annex:
✗   None

References

Hals, W. 1750. Complete history of Cornwall, Part II being the parochial history, Exeter: Andrew Brice.

Polsue, J. ed. 1872. In Lake's Parochial History of the County of Cornwall, IV, 315, 317.

Page, W. ed. 1906. The Victoria History of the County of Cornwall, 1, London: James Street, 470.



Terms of Use

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


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