Io, the South Polar Region

This archival image mosaic from NASA Voyager 1 shows Io south polar region. The South Pole is near the terminator line between daylight and night at right center. Haemus Mons, a 10-km high 32,000 foot mountain is at bottom.

This archival image mosaic from NASA Voyager 1 shows Io south polar region. The South Pole is near the terminator line between daylight and night at right center. Haemus Mons, a 10-km high 32,000 foot mountain is at bottom. http://photojournal.jpl.nasa.gov/catalog/PIA00327

IoVoyager