A radar view of the southern highlands of Mars, captured by the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) instrument on ESA’s Mars Express. The radar track covers 5580 km and features the Hellas Basin at the far right, and the south polar ice cap with its associated layered deposits just left of center.
The gap to the left of the south pole is an artificial effect due to a distortion in the measurements; it does not correspond to any geological feature.
Image credit: ESA/NASA/JPL/ASI/Univ. Rome