NASA's Opportunity Mars rover scans to the summit of Cape Tribulation less than 100 meters distant in mid-December 2014.  Beyond lie caches of clay minerals. The scene shows impact breccias and thin soil cover with cobbles over bedrock.  This navcam camera photo mosaic was assembled from images taken on Sol 3871, Dec. 13, 2014 and colorized.  Credit: NASA/JPL/Cornell/ Ken Kremer - kenkremer.com/ Marco Di Lorenzo