Enclosure & Earthworks at Lewiston Hall

Cadw's description

Summary description and reason for designation

The following provides a general description of the Scheduled Ancient Monument.

The monument comprises the remains of a defended enclosure, which probably dates to the Iron Age period (c. 800 BC - AD 74, the Roman conquest of Wales). It comprises two conjoined sub circular enclosures which together with an annexe occupy a blunt promontory above Martin’s Haven and the cove of Pwllcrochan in the tidal section of Milford Haven. An enclosure of c. 45m in diameter and D-shaped sits above the naturally steep east and south east promontory sides, a bank and ditch defend the north and west sides. Abutted to it on the north is a second enclosure measuring 70m north-south by 68m east to west, also banked and ditched except where resting on the steep east slopes. From the south west side of the first enclosure a third rampart extends north across the promontory to enclose an annexe of measurements c 175m north to south by c 150m east to west. A section cut through the annexe rampart revealed it to be 6m wide and 0.4m high and the ditch 3.6m wide and over 2m deep.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, building techniques and functional detail.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.