Sols 4182-4183, October 30-31, 2015. The south wall of Marathon Valley shows several outcrops of bedrock. These may be giant pieces of ejecta surrounded by debris they have shed over time. Marathon Valley, which runs roughly east-west, is a notch in the rim of Endeavour Crater, an impact structure 22 kilometers (14 miles) wide. The crater’s interior can be glimpsed at extreme left (horizon unrectified).
Mission scientists plan to position Opportunity on the valley’s south wall, where the north-facing slope will increase the amount of sunlight on the rover’s solar power panels during the coming Martian winter. This composite image uses six false-color Pancam frames by Holger Isenberg, plus one grayscale Pancam frame at right. (Click image to enlarge.)
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.