MMO2521 - Walled Structure, West of Black Mires (Monument)


A small square structure defined by walls less than two metres thick on three sides. The fourth side remains unenclosed.

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Type and Period (2)

Protected Status

  • None recorded

Full Description

A square structure approximately seven metres across is visible on aerial photographs of the 1940s on Porlock Allotment, centred on circa SS 83834298. Three walls less than two metres think are visible, the fourth, south-east facing side, remains unenclosed. The structure is orientated roughly north-west to south-east, and appears to be aligned upon a dense concentration of unusually regularly patterned artillery craters of Second World War date, approximately 250 metres to the north-west. The structure may be the remains of an observation post or firing range blockhouse associated with this evidence for munitions test firing or target practise. The structure is no longer visible on aerial photographs of 1973 but remains of footings may survive. [1-4] During a walkover survey performed by Cornwall Council, it was suggested that this site may have once been the site of a prehistoric field boundary, now remaining as an "L" shaped spread of stones and clearance cairns. However, the above evidence suggests that this is unlikely. [5]

Sources/Archives (5)

  • <1> Aerial photograph: Royal Air Force. 1946 -1948. Vertical Aerial Photography. NMR RAF 106G/UK/1501 (F20) 3197-8. 13/05/1946.
  • <2> Aerial photograph: Various. Various. Vertical Aerial Photograph. NMR RAF 540-931 (F20) 4099-4101. 08/11/1952.
  • <3> Aerial photograph: Various. Various. Vertical Aerial Photograph. NMR OS/73109 587-8. 29/04/1973.
  • <4> Archive: 2007-2009. Exmoor National Park NMP: SS 84 SW. MD002184.
  • <5> Report: Kirkham, G. and Taylor, S.. 2008. Exmoor Mire Restoration Project: Archaeological Survey on Moorland Areas at Alderman's Barrow Allotment, Blackpitts-Exe Head, North Twitchen, Roosthitchen and Verney's Allotment. p. 11; no. 33.



Grid reference Centred SS 8383 4298 (14m by 12m) (Aerial Survey)
Map sheet SS84SW

Finds (0)

Related Monuments/Buildings (0)

Related Events/Activities (1)

External Links (1)

Other Statuses/References

  • Pastscape HOBID (was Monarch UID): 1478219

Record last edited

Jul 27 2018 12:59PM


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