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HER Number:MDV25038
Name:Openworks extending for approximately 1 kilometre to the west of River Erme, Cornwood


Narrow area of openworks extending for approximately 1 kilometre to the west of the River Erme


Grid Reference:SX 632 651
Map Sheet:SX66NW
Admin AreaDartmoor National Park
Civil ParishCornwood
DistrictSouth Hams
Ecclesiastical ParishCORNWOOD

Protected Status: none recorded

Other References/Statuses

  • Old DCC SMR Ref: SX66NW/102

Monument Type(s) and Dates

  • OPEN CUT (Constructed, Early Medieval to Post Medieval - 1066 AD to 1750 AD (Between))

Full description

Royal Air Force, 1946, CPE/UK 1890, 4278 (Aerial Photograph). SDV140289.

Photograph taken on 10th December 1946.

Royal Commission on the Historical Monuments of England, 1985, Aerial Photograph Project (Dartmoor) - Dartmoor Pre-NMP (Cartographic). SDV319854.

Openworks extend into streamwork around SX63606514. Spoilheaps visible.

Newman, P., 2018, Erme Valley Survey data (GIS and Excel spreadsheet) (Cartographic). SDV361913.

Long thin area of openwork shown on survey.

Newman, P., 2018, The Upper Erme Valley, Dartmoor National Park, Devon: An Archaeological Survey, Appendix 1 (Report - Survey). SDV362921.

Approximately 4 hectares of tin streamworks following the course of a small western tributary of the River Erme, referred to by R H Worth (1953, 299) as Knackersmill Gulf. The limit of the tinwork’s main working area is well defined with a scarp of between 1 metre and 2 metres deep running around most of the perimeter. The tinwork is long and narrow, just over 1 kilometre long, but varying in width between 84 metres and 17 metres. The interior working area contains the usual evidence of low linear spoil heaps, pits and channels, some of which have been reinforced by low revetments. A ruined rectangular building (MDV20840), a probable tinner’s lodge, survives in the approximate centre of the tinwork. The lower, eastern portion of the working has transected a prehistoric enclosure (MDV13172), completely effacing the remains in its path.

Sources / Further Reading

SDV140289Aerial Photograph: Royal Air Force. 1946. CPE/UK 1890. Royal Air Force Aerial Photograph. Photograph (Paper). 4278.
SDV319854Cartographic: Royal Commission on the Historical Monuments of England. 1985. Aerial Photograph Project (Dartmoor) - Dartmoor Pre-NMP. Royal Commission on the Historical Monuments of England Aerial Photograph P. Cartographic.
SDV361913Cartographic: Newman, P.. 2018. Erme Valley Survey data (GIS and Excel spreadsheet). GIS ShapeFile. Digital. [Mapped feature: #117222 ]

Associated Monuments

MDV13172Related to: Hut circle settlement with enclosure and hut circles on Erme Plains, Cornwood (Monument)
MDV20840Related to: Tinner's building within streamworks north-west of Knackersmill Gulf, Cornwood (Building)

Associated Finds: none recorded

Associated Events

  • EDV8082 - Survey of the Upper Erme Valley

Date Last Edited:Apr 23 2020 3:05PM