NASA claims to have solved the mystery of the ‘jelly doughnut’ rock on Mars, on a photo from January 8 showing a rock that wasn’t visible in previous images. Image © NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.
According to the Space Agency, more recent images show the original piece of rock struck by the rover’s wheel, slightly uphill from where Pinnacle Island.
Image above: This image from the panoramic camera (Pancam) on NASA’s rover Opportunity shows the location of a rock called “Pinnacle Island” before it appeared in front of the rover in early January 2014. Arrow at lower left shows Pinnacle Island. Arrow at center shows Stuart Island rock. This image was taken during Sol 3567 of Opportunity’s work on Mars (Feb. 4, 2014).