In the twentieth century English Heritage identified two sections of ground on Flamborough Rigg and Pickering Moor as extensions of the Wheeldale structure and sections near Keys Beck are reported to be visible in aerial photography from 1946.
English Heritage identified two sections of ground on Flamborough Rigg as extensions of the Wheeldale structure. This was in the twentieth century. English Heritage identified two sections of ground on Pickering Moor as extensions of the Wheeldale structure. This was in the twentieth century. Sections near Keys Beck are reported to be visible in aerial photography from 1946.