A group of wooden structures of prehistoric, possibly Iron Age date, comprising:
1. A possible fish trap. Located within estuarine/marine clays near mean low water mark. The structure consisted of a double, sometimes triple line of vertical or near vertical stakes, 1-3cm in diameter. The stakes projected 10-15 cm above the clay; some were forked and those identified were of elm. They had been pushed into a firm, grey estuarine/ marine clay which, at the north end of the exposure was cut by an 80-100cm wide channel. The stakes extended as a distinct line for c.20m and for a further 40m could be traced by the presence of occasional uprights.<1>
2. A hurdle structure: comprising 53 straight rods, three of which were longitudinals. Contained in estuarine clay c.2.75m below high water mark. The lateral rods were set at an oblique angle to the longitudinals and could be seen to go both under and over them. There was a single vertical post which may have secured the structure onto the mud surface. The rod ends had been cut with a metal tool.<1><2>
3. A large forked chunk of oak with flat, metal-cut ends, recovered from the top of the same clay which surrounded the hurdle structure.<2>