Monument record HMY 023 - Possible pits of unknown date cut into the saltmarsh in the Deben Estuary.

A group of possibly man-made angular and interlocking pits, centred on TM 29314315, can be seen adjoining a channel in the salt-marsh at the edge of the Deben Estuary on photographs taken from the 1940s onwards. There is no clear evidence that the pits are man-made but if they are man-made features they may constitute the remains of a small-scale shellfish production site or of some type of extractive process. (S1) (S2) The features are still visible on photographs taken in 1971 but this area of salt-marsh appears to be subject to a process of managed retreat. (S3)
Other pits in the area may also be man-made features.