By TIMOTHY POTTER T HE 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 1 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. 2 The air photographs also showed traces of a palisade revetting the rampart which, as was demonstrated by trial-trenching in 1954, 3 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. The present excavations at Biglands House resulted from plans to construct a bungalow on the line of the east ditch of the Roman fortlet. By the time an excavation could be mounted, in August 1974, the foundation-trenches for the bungalow had already been cut and the archaeological work had consequently to be confined to two hand-cut sections of the ditch. While this work was in progress, it was learnt that the landowners intended to garden the interior of the fortlet and further to disturb it with power-cable trenches. A test trench • We would like warmly to acknowledge the cooperation and hospitality of the landowners, Mr and Mrs H. Jefferson and Mr Brian Jefferson, and of many other friends in the area. We would also like to thank Miss Dorothy Charlesworth (Department of the Environment); Mr J. Cansfield and Mr E. Phillips (University of I^ancaster); Mr George Richardson, Mr Anthony Ellwood and other members of the Cumberland and Westmorland Archaeological and Antiquarian Society; Mr Tom Clare and the Cumbria County Council Planning Department; and those who contributed specialist reports, Mr Brian Hartley and Miss Brenda Dickinson (Samian), and Mr J. P. Gillam (coarse pottery) and Dr David Shotter (coins). The finds were drawn by Richard Turner and the survey in FIG. I was carried out by Richard Andrews. Finally we would like to thank Mr Richard Bellhouse, the pioneer of research on the Cumberland coast defences, who visited the excavations and profered much helpful advice, and Professor Sheppard Frere, who made many helpful suggestions on the first draft of this report.