Red hill. Briquetage includes hearths, vessels, pedestals and firebars. <1> - <13>
The principal features of the saltern are a substantial mound surrounded by a square bank and an earthwork causeway which runs from this to the sea wall. The enclosure bank survives to a height of up to 2m along parts of its southern, eastern and western sides (the northern side having been partially eroded away by tidal action) and is 4m wide enclosing an area approximately 50m square; on the outside of the bank is a 1m wide ditch. Within the enclosed area in a roughly central position is the mound of the red hill which survives to a maximum height of some 10m. Running in a south easterly direction from the southern bank of the enclosure for some 70m is a raised earthwork platform 10 to 15m wide; it appears to form a causeway across the salt marsh connecting the monument to the adjoining pasture south of the sea wall.
The monument may be of two periods: excavations have shown the saltern to be early Roman in date, whereas the banked enclosure and earthwork causeway may be later additions, representing reuse of the raised ground of the red hill as a dry enclosure for grazing livestock. Much of the soil of the salt marsh immediately adjacent to the monument is red in colour; some areas could be open hearths or fire floors, the red colour resulting from the artificial heating of the brine. <14>

The earthwork enclosure, causeway and mound of the red hill area were updated as part of the NMP update August 2009 <14-16>.