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HER Number:MDV28106
Name:Clay workings at Left Lake, Harford


Clay works including pits, waste heaps and earthworks covering 1.7 hectares at Left Lake


Grid Reference:SX 647 633
Map Sheet:SX66SW
Admin AreaDartmoor National Park
Civil ParishHarford
DistrictSouth Hams
Ecclesiastical ParishHARFORD

Protected Status

  • SHINE: Earthwork remains of the early 20th century China Clay works at Redlake Mine and the associated railway, as well as prehistoric remains on Ugborough Moor

Other References/Statuses

  • Old DCC SMR Ref: SX66SW/196
  • SHINE Candidate (Yes)

Monument Type(s) and Dates

  • CLAY WORKINGS (Constructed, XVIII to XXI - 1751 AD to 2009 AD (Between))

Full description

National Monuments Record, 1969, NMR SX6463, 4 (Aerial Photograph). SDV165976.

Photograph taken on 22nd April 1969.

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

Clayheap covering 1.7 hectares visible on aerial photograph.

Griffith, F., 1988, Devon's Past. An Aerial View, 112, Plate 98 (Monograph). SDV64198.

Left Lake Clayworks was roughly contemporary with Redlake China Clay Works.

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

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

A water-filled clay pit, waste heaps and various other earthworks at Left Lake clay pit on Ugborough Moor. The heaps cover 1.5 hectares of ground and may include overburden and waste sands from the pit. A tramming system would have been in use resulting in the elongated ‘finger’ shape of some of the dumps, including the 97 metres by 20 metres by 8 metre high linear dump to the west of the group, and several smaller finger dumps and flat-topped dumps. Immediately north-west of the pit is a sky tip of 6 metres high with a base measurement of 50 metres by 42 metres. This was served by an incline from the bottom of the pit. The earthwork slope of the incline survives on the eastern side of the tip, above the waterline of the pit. Clay was extracted from this site for a short period in the 1850s, and again between 1911 and 1932 when operated by the China Clay Corporation, and later the Ivybridge China Clay Company.

Sources / Further Reading

SDV165976Aerial Photograph: National Monuments Record. 1969. NMR SX6463. National Monuments Record Aerial Photograph. Photograph (Paper). 4.
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: #125414 ]
SDV64198Monograph: Griffith, F.. 1988. Devon's Past. An Aerial View. Devon's Past. An Aerial View. Paperback Volume. 112, Plate 98.

Associated Monuments

MDV4234Part of: Left Lake China clay works, Harford and Ugborough Parishes (Monument)
MDV27897Related to: Clay working spoil heap at Left Lake clay works, Harford (Monument)
MDV124479Related to: Ruined building at the Left Lake clay workings, Harford (Building)

Associated Finds: none recorded

Associated Events

  • EDV8082 - Survey of the Upper Erme Valley

Date Last Edited:Apr 27 2020 1:56PM