Sol 3923, February 6, 2015. Opportunity’s Pancam is scouting the terrain ahead, as mission controllers look for a place to view into Marathon Valley and survey its terrain before driving down into it.
The arrow at right points to a faintly visible peak rising above the distant Meridiani plains. See the image below, which also appears to catch a hint of another massif at the right edge of the image. These may be outlying rim segments of Miyamoto or Bopolu Craters. The image above is a four-frame composite (click to load a larger version in a new tab); the image below is a contrast-enhanced crop from a single frame.
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.