Sol 4138, September 14, 2015. The Navcam looked upslope at the southwest rim of Marathon Valley around 11:30 a.m. local time, then the Pancam looked down the slope (below) about 3 p.m., catching a glimpse of the Endeavour Crater floor along the top edge of both images and rover tracks on the left. False-color Pancam images by Holger Isenberg; click either to enlarge.
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.
