The Biglands milefortlet, the first known site of the Cumberland coast defences, lies 5,500 feet beyond the terminal fort at the western end of Hadrian's Wall at Bowness-on-Solway. It survives as a low but prominent grassy mound (FIG. I), situated some 60 m from the edge of the salt marsh and with views which command the Cardurnock peninsula, the Solway estuary and the mountains of Galloway. Its height above the level of the highest tides is 4–5 m, the subsoil consisting of the bedded sands and shingle of a raised beach. The most prominent feature both from the air and on the ground is the silted ditch of the fortlet; it encloses an area which is subrectangular in plan, measuring c. 40 by 50 m. Only the southern end of the fortlet, where there are the farm buildings of Biglands House, lies concealed. There is no obvious sign of a break in the ditch and it was thus assumed that this was a ‘long-axis’ fortlet, orientated north-south, with a rear entrance as at Cardurnock. The air photographs also showed traces of a palisade revetting the rampart which, as was demonstrated by trial-trenching in 1954, was built up of marsh silt; but no structures were recovered in these excavations, and there was only a thin scatter of second-century pottery.