Fig. 5: Rockfall orientation and location with respect to the possible secondary craters and mounds.

a Histograms of slope aspect (azimuthal axis, north is at 0°) at the individual rockfall sites (radial axis: counts). b The map showing rockfall clusters, densities of possible secondaries in Oxia Planum38 and widespread mounds18 with respect to the ExoMars 2022 geological characterization area (striped pattern).