It has also been suggested that the structure originally extended southwards from Wheeldale Moor to link up to the Roman Cawthorne Camp (sometimes spelt 'Cawthorn'). In the twentieth century English Heritage identified two sections of ground on Flamborough Rigg and Pickering Moor as extensions of the Wheeldale structure. Hayes states that the Flamborough Rigg section remained "clearly visible" as late as 1961, and that additional sections near Keys Beck were visible in aerial photography from 1946. The accounts of Hinderwell, Young, and Hayes & Rutter, as well as the 1854 and 2012 Ordnance Survey maps, appear to corroborate the stated course of the structure along this section.