Figure 1: Ganis Chasma (192°E, 18°N) showing Magellan Synthetic Aperture Radar image (gray scale) and the main morphologic features. The seven sites of interest are outlined in red. Morphologic features are mapped after Ivanov and Head (2011): Ganis Chasma (rift zone), Sitwell crater (with its parabola), Bashkirtseff crater, Yolkai-Estsan Mons, and surrounding tesserae. Maps have a simple cylindrical projection and north is up. From Brossier et al., 2022 .