Bruce Murray Space Image LibraryViking Orbiter 2 - Southern Hemisphere Monitoring Viking Orbiter 2 - Southern Hemisphere Monitoring 36-frame mosaic of Mars' southern hemisphere, taken on August 8, 1977 from an altitude of approximately 30,000 km. This image is in pseudo-true color, developed from a monochrome RED filter mosaic taken over the span of a few minutes by Viking Orbiter 2. A small patch of missing data along the horizon at upper right has been filled in for aesthetic purposes. The mosaic is centered on Noachis Terra. North is to the left. The dark Terra Sabaea and light southern Arabia Terra are visible at top left. The Hellas Basin, shrouded in dust, is visible along the horizon at top right. Nearing its minimum summer extent is the southern ice cap at bottom right. NASA / JPL / USGS / Justin CowartOriginal image in PNG format here.