Atlas of Hillforts of Britain and Ireland

SC3042 Inchtuthil, Perthshire (Inchtuthil Plateau)

Satellite Imagery

Satellite Imagery

HER:  Perth and Kinross Heritage Trust MPK3644 (None)

NMR:  NO 13 NW 6 (28598)

SM:  1596

NGR:  NO 1152 3930

X:  311520  Y:  739300  (OSGB36)

Summary

This remarkable and unusual promontory fort is situated at the extreme W tip of the Inchtuthil plateau. Its defensive lines are massively constructed, at first sight comprising no fewer than five ramparts with external ditches drawn across the promontory in a straight line, to form a close-set belt almost 60m deep that cuts off an area measuring about 80m from N to S immediately to the rear of the innermost rampart by up to 43m transversely (0.3ha). No entrance is visible and the ends of the ramparts have been truncated by landscaping works on both margins of the promontory. On closer inspection, however, the ditch between the slighter second and third ramparts is a comparatively shallow feature, suggesting either that the outer ramparts are an addition to the inner scheme, or that the two inner ramparts with their medial ditch were inserted behind an earlier scheme enclosing an area of perhaps as much as 0.5ha. This junction between the two defensive schemes is clearly visible in the exaggerated section drawn by Thomas Ross in 1901, when a trench was driven through the centre of the defences to reveal other hints of multiperiod construction in the inner defences where the base of the massive inner rampart, which measures some 8m in thickness by 1.3m in height, not only appears to extend beyond the lip of the ditch, but the inner scarp of the ditch displays a stepped profile that is likely to have been created by recuts of its line. In the field there are also traces of a stony bank superimposed on the crest of the inner rampart, though this may be a later enclosure in the designed landscape. The excavation trench was also driven into the interior, revealing an earlier ditch about 4m in breadth cutting off an area measuring about 60m from NNE to SSW by 30m transversely (0.14ha) on the NW tip of the promontory; a palisade trench was found behind it, but this diverged towards the N and may represent yet another phase of enclosure on the promontory. In addition to these earlier perimeters the excavators located an area of paving with a hearth within the interior, almost certainly representing the floor of an internal building. A key discovery of the excavations was that the inner rampart, which would have stood in excess of 6m above the bottom of its ditch, contained large quantities of Gourdie stone that can only have been robbed from the derelict defences of the Roman legionary fortress abandoned about AD 87. The only other find was a fragment of the upper stone from a rotary quern.

Status

Citizen Science:  

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -382977  Y:  7666150  (EPSG: 3857)

Longitude:  -3.4403451666088833  Latitude:  56.53740543989546  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  Perth & Kinross

Historic County:  Perthshire

Current Parish/Community/Council/Townland:  Caputh

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:  50.0m

Boundary

N/A


Dating Evidence

While the Gourdie stone in the inner rampart identifies one period of construction after AD 87, the earthworks evidently reflect a longer and more complex sequence of occupation.

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:   Planted with trees

Evidence:
Artefactual:   The inner rampart incorporates Gourdie stone robbed from the adjacent legionary fortress after AD 87.

Investigation History

Thomas Pennant also visits in 1772, publishing a plan that seems clearly derived from William Roy's, albeit that the latter plan was unpublished (Pennant 1777, 68)

Investigations:
Earthwork Survey (1755):   Plan by William Roy (1793, pl xviii)
1st Identified Written Reference (1757):   Noted (Maitland 1757, 199)
Earthwork Survey (1780):   Plan of the plateau by J McComic (Original Perth Museum and Art Gallery; Copy held RCAHMS PTD 220/5 P)
1st Identified Map Depiction (1783):   Depicted as a 4-square camp, but possibly the fortress misplaced by James Stobie's map of The counties of Perth and Clackmannan (1783)
Other (1864):   Annotated Tumuli on the 1st edition OS 25-inch map (Perth and Clackmannan 1867, sheet 63.13)
Excavation (1901):   Directed by Thomas Ross for the Society of Antiquaries of Scotland (Abercromby, Ross and Anderson, 1902, 230-40)
Earthwork Survey (1901):   Plan by Thomas Ross (Abercromby, Ross and Anderson, 1902, 230-40, fig 19)
Other (1936):   Scheduled
Other (1957):   Noted during RCAHMS Survey of Marginal Lands (Feachem 1963, 147)
Earthwork Survey (1989):   Plan and description (RCAHMS DC 25087; DC 25090-1; RCAHMS 1994, 52-5, 91)
Other (1994):   Visited by the Hill-Fort Study Group
Geophysical Survey (2011):   (Morris 2011)

Interior Features

Featureless

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

Palisade and an area of paving with a hearth were uncovered in 1901

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

Geophysics

several anomalies, but remains unpublished (Morris 2011)

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

NO APPARENT FEATURES

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

Entrances

None known

Total Number of Breaks Through Ramparts:  
2:   Cut at both ends by landscaping works on the margin of the promontory

Number of Possible Original Entrances:  
2:   Unknown

Guard Chambers:  

Chevaux de Frise:  

Entrances:No related records

Enclosing Works

Complex series of five ramparts and ditches, probably representing at least two periods of construction cutting across a promontory. Excavation revealed at least one earlier perimeter and other evidence of multiperiod construction

Enclosed Area:
Area 1:   0.14ha.
Area 2:   0.3haf.
Total:   0.3ha.

Total Footprint Area:  1.1ha.

Ramparts

None

Multi-period Enclosure System:
✓   The inner pair of ramparts are probably not contemporary with the outer ramparts and ditches

Ramparts Form a Continuous Circuit:
✗   None

Number of Ramparts:  
NE Quadrant:   5
SE Quadrant:   0
SW Quadrant:   0
NW Quadrant:   0
Total:   5

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

None

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:  5

Annex:
✗   None

References

Abercromby, Ross and Anderson, J, T and J (1902) 'Account of the excavation of the Roman station at Inchtuthill, Perthshire, undertaken by the Society of Antiquaries of Scotland in 1901'. Proc Soc Antiq Scot 36 (1901-2), 182-242

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

Morris, P (2011) 'Delvine Iron Age Fort, Perth and Kinross (Caputh parish), geophysical survey'. Disc Exc Scot, New Ser, 12 (2011), 145-146

Pennant, T (1776) A Tour in Scotland; MDCCLXXII (vol 2) London

RCAHMS (1994) The Royal Commission on the Ancient and Historical Monuments of Scotland. South-east Perth: an archaeological landscape. 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


Document Version 1.1