This is a short (10 seconds, 5.7 MB) QuickTime movie of what one would see approaching Mars. The image data is a combination of the Viking Visual Imaging Subsystem RGB color data and Viking Mars Digital Image Model data. According to the U. S. Geological Survey "This combination provides spectral and albedo with enhanced topography not apparent in the Viking Color data set."
The movie is best viewed with FireFox or Explorer. Safari will introduce a shift in gamma.
The source image for this movie was obtained courtesy of USGS Astrogeology Science Center.