Mounds on lower Australe Sulci canyon floor. a: Inset; MOLA shaded relief base at 115 m/pixel. b-d: THEMIS visible image mosaics (18 m/pixel) showing close-ups of mounds and nearby impact craters. THEMIS VIS Images used in mosaics: (b) V08829007, V08854014, V08879005 (c) V08854014, V08879005, V08904005 (d) V08692012.