A programme of archaeological observation, investigation and recording was undertaken by Humber Field Archaeology on behalf of Northern Powergrid during groundwork associated with the 11kv overhead line diversion at Briscoe Ridge Lane, Beckwithshaw, North Yorkshire. Though no archaeological features were observed or finds collected, there was a notable change in the quality of the subsoil from clay to sand a little to the east of the Iron Age entrenched site, and this sandy subsoil, which would have been far more suitable for habitation and working, continued for at least 170m to the west.