Visited Blaxhall Heath today to map the anti-landing trenches. To map all theses obstacles in Suffolk is a project in its own right! A wide deep trench appears to have been incorporated in the layout of this obstacle, not sure of the date or purpose of this trench. This site was apparently also used as a firing range - I found the remains of two tail fins of 2" mortars. The layout of the trenches is typical - a grid pattern. The spoil was placed in piles at intervals along both sides of the trench to further improve the obstacle to any landing aeroplanes/gliders.
Also some more work on the website today - its taking much longer than anticipated. If you have found this blog via the website, please be patient, I will get round to posting the field work stuff on it!