Report on the excavation of a single trial trench, excavated to inform the proposed widening of the A46 road between Lincoln and Newark. The trenches was positioned across an intermittent low bank, which marked the Lincolnshire and Nottinghamshire county boundary in this area. It had been suggested that the bank had earlier origins, marking the original alignment of the Roman Fosse Way, although no trace of the former Roman road was identified in the trench. The bank was shown to be very badly disturbed by roots and animal burrows, and although redeposited sherds of Roman and post-medieval pottery were recovered, it remains undated. Further ditches were identified running parallel to the bank, some stretches of which have been identified as post-medieval, and others being Iron Age in origin. It was suggested that the possible bank and ditch system perhaps represents a sequence of construction of territorial boundaries dating from the Iron Age to the Anglo-Saxon or medieval period, although this interpretation remains tentative.