The incomplete earthwork remains of a causeway can be seen on aerial photographs taken in 1946. These are situated on the saltings to the east of Nor Marsh. The surviving section nearest Nor Marsh is circa 81m long, the second section is to the south east and measures circa 100m. These are all that remains of a path that headed south east across the saltings for over 1km and is marked on the 1881 Ordnance Survey map. The causeway provided access across the saltings which at this date may have been used for grazing animals. This farming regime must have been abandoned by 1896 by which time a considerable area of saltings had been removed, including the south eastern end of the causeway (the mud was used in the manufacture of Portland cement). These two lengths of causeway can still be seen on aerial photographs taken in 2007. These features were mapped from aerial photographs as part of the English Heritage: Hoo Peninsula Landscape Project.