Region 4 in Fig. 1 in Anhur (from images acquired with the orange filter on 25 March 2015 (left) and 10 February 2016 (right). The March 2015 image has a lower spatial resolution (1.7 m px⁻¹) than that in 2016 (1 m px⁻¹), and it is reprojected onto the shape model to match the observing conditions of the February 2016 image. Thus the left- and right-side images have the same spatial scale. Changes are observed within the A1–A3 polygons, notably a cliff retreat in A2 area and a new cliff in area A3, as well as in the location and appearance of boulders B1–B4. See the online movie, which shows the morphological changes between these two epochs.