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Summary

Earthworks of irregularly shaped pits and mounds, interpreted as evidence of a possible medieval or post-medieval alluvial tin streamworks, are visible on visualisations derived from lidar data captured between 1998 and 2017.

Location

Protected Status: none recorded

Other References/Statuses

• Old DCC SMR Ref: SX55SE/49

Monument Type(s) and Dates

• STREAMWORKS (Early Medieval to Post Medieval - 1066 AD to 1750 AD (Between))
• TIN WORKS (Early Medieval to Post Medieval - 1066 AD to 1750 AD (Between))

Full description

TITHE MAP, Untitled Source (Migrated Record). SDV159690.

Tithe map. Field no 369, tin park coppice, no 368, tin park orchard.(tithe map).

Untitled Source (Migrated Record). SDV159691.

Des=tithe map in dro/(1839).

South West Heritage Trust, 1838-1848, Digitised Tithe Maps and Transcribed Apportionments (Cartographic). SDV359954.

Land parcels 368 and 369 are recorded as ‘Tin Park Orchard’ and ‘Tin Park Coppice’, respectively.

Ordnance Survey, 1880-1899, First Edition Ordnance 25 inch map (Cartographic). SDV336179.

The area is shown as mostly comprising woodland.

Environment Agency, 1998-2017, LiDAR DTM data (1m resolution) EA: South Devon Coast to Dartmoor, LIDAR SX5851 Environment Agency DTM 01-JAN-1998 to 31-MAY-2017 (Cartographic). SDV361470.

Earthworks of irregularly shaped pits and mounds are visible.

Hegarty, C., Knight, S. and Sims, R., 2019-2020, The South Devon Coast to Dartmoor Aerial Investigation and Mapping Survey. Area 2, Avon Valley to Plymouth (AI&M, formerly NMP) (Interpretation). SDV362982.

Irregularly shaped pits and mounds are visible as earthworks on visualisations derived from lidar data captured between 1998 and 2017. The earthworks occupy an area of circa 3 hectares of floodplain along the southern edge of the River Yealm. The earthworks do not correspond with any pit or mound features in this location on the mid-19th century Parish Tithe Map, although land parcels 368 and 369 on this map to the west are recorded as ‘Tin Park Orchard’ and ‘Tin Park Coppice’, respectively, on the accompanying Tithe Apportionment. Much of this area occupied by the earthworks is shown as woodland on the late 19th century First Edition Ordnance Survey map. Transcription of these earthworks was carried out primarily using Simple Local Relief and Positive Openess lidar visualisations. Given their complexity and in places subtle nature, not all visible earthworks have been transcribed and an extent of area polygon has been used to define the approximate limit of the earthworks. Their character and form support the interpretation they represent the extractive pits, stream channels and associated spoil heaps of a possible medieval or post-medieval alluvial tin streamworks which had passed out of use by the mid-19th century. Water used in the washing and processing of the tin-ore was probably sourced from the River Yealm, via a series of leats. The working face of the streamworks is clearly visible as a series of sharp scarps along the southeast edge of the earthworks. The earthworks are not visible on other available aerial imagery owing to dense tree cover. Further investigations, such as targeted trenching is recommended to help define the character of these earthworks. Although no earthworks have not been observed within Tithe Map land parcels 368 and 369 to the southwest, a site inspection may help to establish the presence of additional tin working remains here.

Sources / Further Reading

Associated Monuments: none recorded

Associated Finds: none recorded

Associated Events

• EDV8098 - The South Devon Coast to Dartmoor Aerial Investigation and Mapping (formerly NMP) Survey, Area 2, Avon Valley to Plymouth (Ref: ACD2040)

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