NHER 56135 (Monument record) - Extraction pit, probably modern

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Summary

A rapid earthwork identification survey in 2011 revealed a series of circular depressions arranged in a line which are likely to be former extraction pits. Aerial photographs and imagery from a lidar survey flown in 2015 has confirmed this interpretation, and demonstrated that rather than being three separate pits, the earthworks are conjoined. No quarry is marked here on late 19th and early 20th century Ordnance Survey maps, suggesting that the extraction took place in the modern period.

Protected Status/Designation

None recorded

Location

Map sheet	TL88SW
Civil Parish	THETFORD, BRECKLAND, NORFOLK

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Full Description

August 2011. Walkover Survey.
Rapid earthwork identification survey.
A series of three circular depressions with steep sides and up to 1.5m deep aligned east to west, which are interpreted as former extraction pits.
See report (S1) for further details.
S. Howard (HES), 16 September 2011.

February 2017. 'Brecks from Above' and Breckland National Mapping Programme.
An area of extraction or quarrying, probably of modern date, is visible as earthworks on aerial photographs, such as (S2), and imagery from a lidar survey (S3). Its location corresponds with that of the three extraction pits described above. It is not depicted on either the Ordnance Survey First Edition 6-inch map (S4), or the Second Edition 25-inch map (S5), and is probably of modern date. It has not been transcribed but the mapped extent of this site has been amended to reflect the feature visible on the lidar imagery [1].
S. Tremlett (Norfolk Historic Environment Service), 10 February 2017.

Associated Sources (5)

<S1> SNF81857 Unpublished Contractor Report: Cushion, B. 2011. Thetford Warren Lodge. Heath Restoration Project. Archaeological Earthwork Rapid Identification Survey. Brian Cushion Archaeological & Cartographical Surveyor.
<S2> SNF94127 Vertical Aerial Photograph: Various. Vertical Aerial Photograph. RAF/3G/TUD/UK/59 V 5207-8 05-FEB-1946 (HEA Original Print).
<S3> SNF94129 LIDAR Airborne Survey: Various. LIDAR Airborne Survey. LIDAR Thetford Forest Research 0.5m DTM 15-JUL-2015 (BNG Project, FC England, Fugro Geospatial).
<S4> SNF53293 Map: Ordnance Survey. 1884-1891. Ordnance Survey Map. Six inches to the mile. First Edition. 1:10,560.
<S5> SNF73882 Map: Ordnance Survey. 1902-7. Ordnance Survey second edition 25 inch (1902-7) map. 25 inches to 1 mile.

Site and Feature Types and Periods (6)

Object Types (0)

Related NHER Records (0)

Record last edited

Feb 21 2021 2:04PM