Region 3 in Fig. 1 (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 of 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. Features marked with red arrows point to distinct surface changes (B1–B3), and areas delineated with red polygons indicate locations where the arrangements of groups of boulders are very likely to have changed. The new scarp previously described by Fornasier et al. (2017) that is also shown in Fig. 9 is indicated as well. See the online movie, which shows the morphological changes between these two epochs.