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Summary

An air shaft over the Honiton Tunnel, the rail tunnel under Northcote Hill roughly between Northcote Hill Farm and Lower Whitehorn, was visible on aerial photographs of the 1940s onwards as a small circular structure set between low earthwork mounds, probably spoilheaps, on the west facing slopes to the south of Oakdene.

Location

Protected Status

• SHINE: 19th century railway tunnel ventilation shaft about 75 metres south-west of Oakdene

Other References/Statuses: none recorded

Monument Type(s) and Dates

• SPOIL HEAP (XIX to XXI - 1801 AD to 2016 AD (Between))
• VENTILATION SHAFT (XIX to XXI - 1801 AD to 2016 AD (Between))

Full description

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

A small structure was depicted and annotaed as Air Shaft.

Royal Air Force, 1947, RAF/CPE/UK/1974, RAF/CPE/UK/1974 F20 3440-3441 11-APR- (Aerial Photograph). SDV356127.

A small structure was visible casting a shadow.

Next Perspectives, 2014, Aerial Photography for Great Britain, Next Perspectives APGB Imagery ST1801 08-SEP-2014 (Aerial Photograph). SDV359479.

A small circualr structure was visible.

Bluesky International, 2016, LiDAR DTM data (0.5m resolution) Blackdown Hills and East Devon AONBs: 3 transects, LIDAR ST1801 Bluesky International DTM 24 & 30-APR-2016 & 04-MAY-2016 (Cartographic). SDV359714.

Low earthwork mounds were visible.

Ordnance Survey, 2016, MasterMap (Cartographic). SDV359352.

A small structure was depicted and annotaed as Air Shaft.

Hegarty, C. + Knight, S. + Sims, R., 2016-2018, The Blackdown Hills AONB and East Devon River Catchments National Mapping Programme Project (Interpretation). SDV359463.

An air shaft over the Honiton Tunnel, the rail tunnel under Northcote Hill roughly between Northcote Hill Farm and Lower Whitehorn, was visible as a small circular structure between 3 and 4 metres in diameter, on the west facing slopes to the south of Oakdene. The structure was located between two low, conjoined roughly circular earthwork mounds, probably spoilheaps, visible as earthworks on digital images derived fromlidar data captured in early 2016.
The shaft structure was depicted on the Ordnance Survey First Edition 25 inch map and on the current OS MasterMap base layers and has not therefore been transcribed as part of the survey.
Nonetheless, the airshaft superstructure was clearly visible on aerial photographs from 1947 onward and digital images derived from aerial photographs of 2014 and lidar data of 2016, and is worthy of record as part of the historic rail infrastructure.

Sources / Further Reading

SDV336179	Cartographic: Ordnance Survey. 1880-1899. First Edition Ordnance 25 inch map. First Edition Ordnance Survey 25 inch Map. Map (Digital).
SDV356127	Aerial Photograph: Royal Air Force. 1947. RAF/CPE/UK/1974. Royal Air Force Aerial Photograph. Photograph (Paper). RAF/CPE/UK/1974 F20 3440-3441 11-APR-.
SDV359352	Cartographic: Ordnance Survey. 2016. MasterMap. Ordnance Survey Digital Mapping. Digital.
SDV359463	Interpretation: Hegarty, C. + Knight, S. + Sims, R.. 2016-2018. The Blackdown Hills AONB and East Devon River Catchments National Mapping Programme Project. Historic England Research Report. Digital.
	Linked documents:2
SDV359479	Aerial Photograph: Next Perspectives. 2014. Aerial Photography for Great Britain. Digital. Next Perspectives APGB Imagery ST1801 08-SEP-2014.
SDV359714	Cartographic: Bluesky International. 2016. LiDAR DTM data (0.5m resolution) Blackdown Hills and East Devon AONBs: 3 transects. Not applicable. Digital. LIDAR ST1801 Bluesky International DTM 24 & 30-APR-2016 & 04-MAY-2016. [Mapped feature: #74293 ]

Associated Monuments: none recorded

Associated Finds: none recorded

Associated Events

• EDV7508 - The Blackdown Hills AONB and East Devon River Catchments National Mapping Programme (NMP) project (Ref: ACD1228)

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