14/04/1999 Anti tank blocks shown on oblique aerial photographs (RCAHMSAP 1995) (NO c. 6883 5123) , situated on both sides of the riverbank, about 150m N of Red Castle (Scottish NMR NO65SE 10). Previous aerial photographs (RCAHMSAP 1977) show another line of anti-tank blocks (NO c.
6893 5109) , about 100m E of Red Castle, which on the later photographs are only partly visible, due to demolition or sand deposition, as they lie within the tidal area. 06/1994 Double row of cubes laid corner-to-corner along river bank.