NHER 31555 (Cropmark and Earthwork record) - Possible Early Saxon buildings or Neolithic flint mines at Foxburrow Plantation

26 June 1990. NAU air photography.
Possible sunken featured buildings in Foxburrow Plantation.
D. Edwards (NAU).

Marks certainly resemble sunken featured buildings found elsewhere. But note proximity of Neolithic flint working site NHER 17836. Could these be flint mine shafts?
E. Rose (NLA), 27 September 1995.

July 2006. Vertical Aerial Photograph.
Google Earth imagery shows pit like features that resemble sunken featured buidlings.
See (S3) for further details.
D. Lefeuvre (HES), 14 February 2011.

April 2011. Norfolk NMP.
Possible sunken featured buildings or pits are visible as cropmarks on aerial photographs (S1-S3), centred on TG 1983 0363. It is also possible that they may relate to flint mining, or, in fact, to geological rather than archaeological features, and have therefore been recorded with a note of caution.
A further area of possible earthwork pits (S4) and a possible earthwork ditch feature (S5) are visible within trees to the north east, centred on TG 1993 0371. These have not been mapped, but may have archaeological significance.
Cropmarks of undated fragmentary linear ditches are also visible to the east, at TG 2000 0363 (S6), and to the north, at TG 1989 0394 (S2).
E. Bales (NMP), 14 April 2011.