The rover’s left-side Navcam takes a closer look at those cracks in the bedrock, with soil slipping down into the openings.
NASA description: This image was taken by Navcam: Left B (NAV_LEFT_B) onboard NASA’s Mars rover Curiosity on Sol 589 (2014-04-03 09:56:07 UTC).
More Sol 589 images (from all cameras), and Curiosity’s latest location map.