Atlas of Hillforts of Britain and Ireland

SC3670 Castle Hill, Horsburgh Castle Farm, Peeblesshire (Horsbrugh)

LiDAR 1m DTM Hillshade

LiDAR 1m DTM Hillshade

Satellite Imagery

Satellite Imagery

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HER:  Scottish Borders 51473 (None)

NMR:  NT 24 SE 37 (51473)

SM:  2681

NGR:  NT 2916 4006

X:  329160  Y:  640060  (OSGB36)

Summary

The summit of Castle Hill, which rises up on the N side of the Tweed valley above Horsburgh Castle, is crowned by a small earthwork enclosure, which occupies the site of what was probably a substantial timber fort. The walls or palisades of this fort are reduced to little more than grooves in the turf on the NW side of the stone dyke that traverses the summit, the SE half partly destroyed by the construction of the earthwork enclosure and otherwise obliterated by ploughing in the 19th century. Around the NW half the courses of the palisades are marked by two grooves set 4.9m apart, though since the site was taken out of hill-grazing into a clearing in a forestry plantation these have become increasingly difficult to trace out on the ground. They disappear beneath the dyke on the NE and SW, the outer re-emerging on the NE to be cut by the ditch of the later earthwork. The projected circuit measures about 75m in diameter (0.45ha) and there is an entrance on the NW where the two palisades were linked to create a lined passage 3.5m wide, projections of the outer palisade narrowing its mouth to about 1.8m. Within the interior a second pair of palisades set 1.8m to 2.4m apart can be seen, forming a more typical double palisade with traces of a low medial bank, but too little survives to estimate the size of the enclosure. Again, there is an entrance on the NW, but rather than the formal squared lines of the outer perimeter, here the palisades unite in rounded 'hairpin' terminals to either side of the gap. Immediately within the enclosure, lying to either side of the entrance, there are traces of two round-houses defined by shallow grooves or ditches. Evidently a much smaller enclosure, this too is cut by the later settlement earthwork, which measures about 35m from NNE to SSW by 25m transversely within a heavily robbed inner wall accompanied by an outer bank and ditch, both of which are pierced by a well-formed entrance on the ESE. Despite the ploughing that has severely reduced the perimeter on the S and W, traces of three timber round-house stances can be seen within the interior, each comprising a small central platform encircled by a shallow groove or ditch.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -348122  Y:  7488843  (EPSG: 3857)

Longitude:  -3.1272300108386166  Latitude:  55.648930502221354  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  Scottish Borders

Historic County:  Peeblesshire

Current Parish/Community/Council/Townland:  Innerleithen

Monument Condition

None

Condition:
Extant   ✓
Cropmark   ✗
Likely Destroyed   ✗

Land Use

Formerly under pasture, it is now in a large clearing in a plantation.

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:  324.0m

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:   None
Post Hillfort:   Probably overlain by the inner palisade, certainly by the small settlement earthwork, and subsequently traversed by a stone dyke and partly ploughed down.

Evidence:No related records

Investigation History

Photographed by RCAHMS Aerial Survey Programme in 1983

Investigations:
1st Identified Map Depiction (1856):   Annotated Fort on the 1st edition OS 25-inch map (Peebles 1859, sheet 8.8)
Other (1886):   Brief description by David Christison (1887, 67)
Earthwork Survey (1960):   Plan (RCAHMS PBD 35/1-2)
Other (1962):   Visited by the OS
Earthwork Survey (1964):   Additions to the plan in 1961 and description reviewed (RCAHMS 1967, 74-5, no.195, fig 14; RCAHMS PBD 35/2-3)
Other (1968):   Scheduled
Other (1974):   Surveyed at 1:2500 by the OS
Earthwork Survey (2013):   By Rubicon Heritage Services

Interior Features

At least five timber round-houses, but probably dating from after the main timber-built perimeter, two lying within the inner pair of palisade trenches and defined by shallow grooves or ditches, and three within the latest enclosure with shallow ditches enclosing central platforms

Water Source

None

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

Surface

Inner pair of palisades and the overlying settlement enclosure. Ring-ditch houses

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

Shows the internal palisades and round-houses more clearly than can be seen on the ground

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:  
3:   But large sector of the perimeter levelled

Number of Possible Original Entrances:  
2:   Elaborated in two entries below; it is likely both were opposed by entrances on the obliterated side of the circuit. The entrance into the later settlement enclosure is omitted

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:
1. Passage-way/Corridor (North west):   Timber lined passage
1. Simple Gap (North west):   Through the inner pair of palisades with hairpin terminals

Enclosing Works

Tmber-built perimeter with two pairs of palisade trenches, enclosing a smaller enclosure with double palisades, both enclosures certainly overlain by a small bivallate settlement enclosure

Enclosed Area:
Area 1:   0.45ha.
Total:   0.45ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✓   While the sequence between the inner pair of palisades and the outer is unknown, both are clearly cut by the ditch of the later settlement

Ramparts Form a Continuous Circuit:
✗   This omits the inner palisades and the small settlement enclosure

Number of Ramparts:  
NE Quadrant:   2
SE Quadrant:   0
SW Quadrant:   0
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

Two twin palisades

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:  None

Annex:
✗   None

References

Christison, D (1887) 'The prehistoric forts of Peeblesshire'. Proc Soc Antiq Scot 21 (1886-7), 13-82

RCAHMS (1967) The Royal Commission on the Ancient and Historical Monuments of Scotland. Peeblesshire: an inventory of the ancient monuments, 2v. 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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