Paw-print scarp (indicated by the red arrow) in Nut occurred between September 14, 2014 (a) and March 28, 2015 (b). Note also a string of boulder-like blocks (indicated by the green arrow) that were possibly revealed by the thinning of dust deposits. The observation in (a) was taken at the phase angle of 64◦ with the pixel resolution of 0.53 m. The observation in (b) was taken at the phase angle of 74◦ with the pixel resolution of 0.6 m (Table A.1).