You can train you eyes and increase your 3D viewing skills with this MastcamZ target onboard #Perseverance.
Those ring-like pads are actually Martian dust attracted there by magnets underneath the surface, so that the colored disks at their center remain dust-free.
Processed, cropped MCZ_RIGHT+LEFT+RIGHT, FL: 100mm
looking SW (225°) from RMC 87.3896
Sol 1819, LMST: 11:18:31
Original: https://mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/01819/ids/edr/browse/zcam/ZL0_1819_0828416874_318ECM_N0873896ZCAM03021_100085J01.png

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