Sol 4419, June 29, 2016. Because not all of the Pancam frames of the target dubbed York made it back to Earth, Opportunity returned to finish its survey and investigation. York, which has been lightly brushed to clear off dust, is the circle with a bluish interior at top center. A Microscopic Imager close-up of the brushed area is here.
False-color composite by Holger Isenberg; click the image to enlarge it.
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.