Atlas of Hillforts of Britain and Ireland

SC1669 Black Hill, Crawfordjohn, Lanarkshire (Blackhill)

Satellite Imagery

Satellite Imagery

HER:  The West of Scotland Archaeology Service 10501 (None)

NMR:  NS 92 SW 1 (47416)

SM:  2606

NGR:  NS 9085 2392

X:  290850  Y:  623920  (OSGB36)

Summary

This fort, which is situated on the crest of the SE spur of Black Hill, displays evidence of at least three periods of construction, the latest of which is probably the stone-built inner enclosure. Roughly circular on plan, this measures about 38m from NE to SW by 35m transversely (0.1ha) within a wall reduced to a mound of rubble up to 6m in thickness, and there is a well defined entrance aligned on a gap in the earlier circuit on the NE. The latter takes in an area measuring 64m from E to W by 58m transversely (0.29ha) and has a second entrance on the NW; this has no corresponding gap in the inner wall, thus implying that the inner wall is later. In the opinion of the RCAHMS investigators who surveyed the fort in 1975, however, the rampart of the outer circuit, which measures 7.3m in thickness and up to 0.8m in internal height, is capped with the remains of a substantial stone wall; this they associated with the inner enclosure. Whether this is correct must await further work, but there is no doubt that the outer line is accompanied by an internal quarry around most of its circuit, and an external ditch, which presumably provided all the materials for its construction. On the NW and SE, there is also a counterscarp bank, in the latter sector overlying an earlier palisade trench that can be seen looping out from beneath it. A single house platform can be seen within the inner enclosure, which is also overlain by a 19th century sheepfold.

Status

Citizen Science:  

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -415149  Y:  7458902  (EPSG: 3857)

Longitude:  -3.729350209398253  Latitude:  55.496871536077954  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  South Lanarkshire

Historic County:  Lanarkshire

Current Parish/Community/Council/Townland:  Crawfordjohn

Monument Condition

None

Condition:
Extant  
Cropmark  
Likely Destroyed  

Land Use

None

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

None

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:  None

Aspect:
North  
Northeast  
East  
Southeast  
South  
Southwest  
West  
Northwest  
Level  

Altitude:  335.0m

Boundary

N/A


Dating Evidence

In the absence of excavation, there are neither stratified artefacts nor radiocarbon dates to provide a chronology for the defences.

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:   Palisade overlain by counterscarp rampart of phase I fort
Post Hillfort:   19th century sheepfold built within the interior

Evidence:No related records

Investigation History

First annotated 'Encampt.' on Charles Ross's Map of the Shire of Lanark (1773), it also appears on William Forrest's map of The County of Lanark from an Actual Survey (1816), and is depicted as a single perimeter on the 1st edition OS 25-inch map (Lanarkshire 1863, sheet 42.16). It was sketch-planned and described by David Christison in 1889 (Christison 1890, 317-19, fig 17). It was first visited by RCAHMS in 1942 as part of the Emergency Survey programme, and again in 1963 for inclusion in the County Inventory for Lanarkshire (RCAHMS 1978, 92-4, no.216, fig 47), before it was planned in 1975. It was visited by the OS in 1978, but the palisade was only identified as the result of informal fieldwork by SH to examine traces of cord rig in the vicinity in the 1980s; it was revisited by RCAHMS in 1996. The palisade is clearly visible on some of the aerial photographs taken by RCAHMS in 1981, 1996 and 2006. The fort was Scheduled in 1967.

Investigations:
1st Identified Map Depiction (1773):   Charles Ross, Map of the Shire of Lanark (1773)
Other (1816):   William Forrest's map of The County of Lanark from an Actual Survey (1816)
Other (1858):   Annotated Camp on the 1st edition OS 25-inch map (Lanarkshire 1863, sheet 42.16)
Earthwork Survey (1889):   Sketch plan and description by David Christison (1890, 317-19, fig 17)
Other (1942):   Description by Angus Graham and Gordon Childe for the RCAHMS wartime Emergency Surveys
Other (1963):   Visited by RCAHMS
Other (1967):   Scheduled
Earthwork Survey (1975):   Plan and description (RCAHMS 1978, 92-4, no.216, fig 47; RCAHMS LAD 128/1-2)
Other (1978):   Surveyed at 1:10.000 by the OS
Other (1996):   Description by RCAHMS

Interior Features

Single house platform within inner enclosure

Water Source

None

Source:
None  
Spring  
Stream  
Pool  
Flush  
Well  
Other  

Surface

None

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

See main summary

Total Number of Breaks Through Ramparts:  
2:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  

Chevaux de Frise:  

Entrances:
1. Simple Gap (North east):   None
2. Simple Gap (North west):   None

Enclosing Works

For the purposes of the Atlas, the outer line is treated as the fort, and the inner enclosure is omitted from these fields

Enclosed Area:
Area 1:   0.3ha.
Total:   0.3ha.

Total Footprint Area:  0.5ha.

Ramparts

None

Multi-period Enclosure System:
✓   None

Ramparts Form a Continuous Circuit:
✓   This omits the small inner enclosure

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

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

Grass-grown rubble bank; counterscarp bank overlies earlier palisade trench

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:
✓   None

Number of Ditches:  1

Annex:
✗   None

References

Christison, D (1890) 'Forts, camps, and motes of the Upper Ward of Lanarkshire'. Proc Soc Antiq Scot 24 (1889-90), 281-352

Feachem, R (1963) A guide to prehistoric Scotland. Batsford: London (p 134)

RCAHMS (1978) The Royal Commission on the Ancient and Historical Monuments of Scotland. Lanarkshire: an inventory of the prehistoric and Roman monuments. HMSO: Edinburgh



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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