Sols 4087 and 4090, July 24 and 27, 2015. Opportunity’s Pancam shot this pair of images (in false color by Holger Isenberg) showing the dune field on the floor of Endeavour Crater at the foot of Marathon Valley. The rover was perched high above them at the valley’s head. Click for a larger version.
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.