Comparison of topographic profiles before and after the surface change. a) The solid blue curve corresponds to the path over an exposed outcrop indicated in the right-panel image (cropped from Fig. 5b) on March 28, 2015, the dashed red curve is for October 1, 2014. b) The solid blue curve follows the path over a fresh scarp indicated in the right-panel image (cropped from Fig. 9b) on March 28, 2015. The dashed red curve refers to December 2, 2014.