NHER 11368 (Monument record) - Cropmark of an extinct water course and undated rectangular enclosures

1942. Soilmark of rectangular enclosure with semi-circular addition on west.

Seen on aerial photograph from around 1975 by an informant [1].
Photograph belongs to member of public. [2]

Since referred to by informant as the 'Roman marching camp at Ryburgh'
Only faint parts of this visible on RAF air photographs.
E. Rose 1978 (NAU).

23 July 1980.
NAU air photographs by D. Edwards show that in fact the above feature is an ancient river course. A recent field boundary cutting across a meander gives the impression of the corner of a rectangular enclosure. The rest of the rectangle seems to have been imagined from various differences of soil colour. Informant [3] suggests this may be an ancient channel of the Wensum. However there are small rectangular cropmarks overlying the channel, and it is to these that the county number now applies.
E. Rose (NAU) and D. Edwards (NUA), 14 June 1982.

May 2013.
HER polygon expanded to take in the whole extinct channel. Reexamination of the photographs suggests the rectangular enclosure mentioned above does not exist, however a series of rectangular enclsoures are evident in the southernmost part of the field. These are probably undated field boundaries.
K. Powell (HES), 17 May 2013