This is a combination of navcam and false-color pancam images from from Opportunity Sol 496-498, looking back at Purgatory Dune. Some new panoramas (including this one) have been posted as Midnight Mars Browser metadata updates.
Home of the Midnight Mars Browser software, which allows users to view slideshows and "virtual reality" panoramas of images from the Mars Exploration Rovers "Spirit" and "Opportunity".
