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Historic England Research Records

Bolster Bank

Hob Uid: 427921
Location :
Cornwall
Cornwall
St. Agnes
Grid Ref : SW7077849731
Summary : A univallate linear earthwork, comprising bank and ditch and running for circa 3.3 kilometres and dates from the late prehistoric or early medieval periods. Scheduled.
More information : (SW 710 495] ROMAN DYKE [G.S.] (1)

A trench and mound connecting two valleys, a distance of about
2 miles, on the land side of St. Agnes Beacon. The date and
purpose is unknown. (2,3)

"Bolster Bank" D.A. Earthwork. Faces south, ditch on south.
The name was given to Crawford (4) as a local one by the occupier
of the small farm called, doubtless after it, "Bolster"
[at SW 7155 4984], parish of St. Agnes. (4,5)

The feature can be seen as a large bank with a broad, shallow,
intermittent ditch on the east side. Its form and length suggest
an IA boundary feature; it is extremely unlikely to be Roman.
Resurveyed from SW 71665005 to SW 71084952. (6)

Dyke(NR) (7)


Bolster Bank is an univallate Earthwork 3.3 km in length and probably functioned as a landward defence of a territory 1200 acres in area. It defines an area of heath upland containing one settlement and rich tin-grounds. The precise starting point at the Western End (SW 64 NE 22) is not known. The clearest evidence is given by Borlase as starting at chapel coombes (SW 699 494). Traces of earthworks can be seen within the field boundaries between Wheal Freedom and Goonvrea Farm (SW 7036 4932-7133 4960). Between Goonvrea Farm and Bolster Farm (SW 7133 4960-7159 4988) the earthwork increases its height and survives to a maximum of 3.3 m. The best preserved section is between Bolster Farm and Cannonball Turning (SW 71595 49900-71645 50040). The route is difficult to trace through St Agnes but is probably present at SW 72040 50455 where a row of cottages is situated on the edge of a scarp which could be interpreted as the Earthwowrk. It is likely to be early mediaeval but a pre-Roman Iron Age date cannot be discounted. (8)

The earthwork is included on a distribution map and text of mediaevel sites in Cornwall. (9)


Sources :
Source Number : 1
Source : Ordnance Survey Map (Scale / Date)
Source details : OS 6" 1908
Page(s) :
Figs. :
Plates :
Vol(s) :
Source Number : 2
Source : The Victoria history of the county of Cornwall : volume one
Source details :
Page(s) : 472
Figs. :
Plates :
Vol(s) : 1, 1906
Source Number :
Source : SW 74 NW 11(Bolster Bank) (1970)
Source details :
Page(s) :
Figs. :
Plates :
Vol(s) :
Source Number : 3
Source : Cornish archaeology
Source details : (R Warner)
Page(s) : 115
Figs. :
Plates :
Vol(s) : 1, 1962
Source Number : 4
Source : VIRTUAL CATALOGUE ENTRY TO SUPPORT NAR MIGRATION
Source details : Dark Age Map Index, 1935. (O.G.S. Crawford)
Page(s) :
Figs. :
Plates :
Vol(s) :
Source Number : 5
Source : VIRTUAL CATALOGUE ENTRY TO SUPPORT NAR MIGRATION
Source details : OS Map of Britain in the Dark Ages', 2nd edn. (1966)
Page(s) :
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Source Number : 6
Source : Field Investigators Comments
Source details : F1 ANK 07-APR-70
Page(s) :
Figs. :
Plates :
Vol(s) :
Source Number : 7
Source : Ordnance Survey Map (Scale / Date)
Source details : OS 1:10000 1975
Page(s) :
Figs. :
Plates :
Vol(s) :
Source Number : 8
Source : Cornish archaeology
Source details : (N. Johnson)
Page(s) : 77-88
Figs. :
Plates :
Vol(s) : 19, 1980
Source Number : 9
Source : Cornish archaeology
Source details : (A. Preston Jones, P. Rose)
Page(s) : 135FF
Figs. :
Plates :
Vol(s) : 25, 1986
Source Number : 10
Source : Scheduled Monument Notification
Source details : 12-Jul-99
Page(s) :
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Vol(s) :

Monument Types:
Monument Period Name : Later Prehistoric
Display Date : Later Prehistoric
Monument End Date : 43
Monument Start Date : -4000
Monument Type : Linear Earthwork
Evidence : Earthwork
Monument Period Name : Early Medieval
Display Date :
Monument End Date : 1066
Monument Start Date : 410
Monument Type : Linear Earthwork
Evidence : Earthwork

Components and Objects:
Related Records from other datasets:
External Cross Reference Source : Scheduled Monument Legacy (County No.)
External Cross Reference Number : CO 526
External Cross Reference Notes :
External Cross Reference Source : Scheduled Monument Legacy (National No.)
External Cross Reference Number : 29669
External Cross Reference Notes :
External Cross Reference Source : National Monuments Record Number
External Cross Reference Number : SW 74 NW 11
External Cross Reference Notes :

Related Warden Records :
Related Activities :
Associated Activities : FIELD OBSERVATION ON SW 74 NW 11
Activity type : FIELD OBSERVATION (VISUAL ASSESSMENT)
Start Date : 1970-04-07
End Date : 1970-04-07
Associated Activities : BOLSTER BANK, GOONVREA FARM
Activity type : EXCAVATION
Start Date : 2004-01-01
End Date : 2004-12-31
Associated Activities : CASTLE RAG HOUSE, GOOVREA ROAD
Activity type : DESK BASED ASSESSMENT
Start Date : 2018-01-01
End Date : 2018-12-31