Fig. 3: Canyon rays.
Deepest sections of Vallis Schrödinger (a and b) and Vallis Planck (c and d) without and with identified craters. Green circled craters are clearly defined by their eroded crater rims, while yellow circled craters are inferred from the terrain and are not used in the crater scaling calculations. A wall of Valles Planck (lower left of c and d) appears to have collapsed into the canyon. Location of Supplementary Fig. 6 and Fig. 2 transects are shown (b and d), respectively.
