2 Linear crop marks show on aerial photographs. A network of these marks shows, but these could be natural in origin.
A series of linear features are visible as cropmarks on aerial photographs. They are of unknown date. The features are situated to the east of Birdingbury.
1 This is shown as two vaguely square enclosures on the cropmark map but nothing is visible on the relevent air photo. The site visit revealed only that the ...
The site of two square enclosures of unknown date. They are visible as cropmarks on aerial photographs. They are situated 400m north of Birdingbury.
1 Features visible on aerial photograph, centred on SP427686. Undated.
2 Interpretation on reverse of aerial photograph says this is possibly geological.
3 A number of possible features visible; this site is ...
Undated cropmark features identified in aerial photographs, possibly geological.