Draughtsman: [Crocker, Edmund]
Medium: Pen and ink on paper
The drawing is framed by a formal border, confirming its status as complete. Black crosses, labelled Brinkworth and Purton, indicate points from which the surveyor took angular measurements. Bury Hill Camp and Ringsbury Camp, both iron-age hillforts, are indicated by soft interlining and loosely rendered concentric rings.