NASA's Mars 2020 Perseverance rover imaged a contact between distinct rock types at a target named "Tinga," while driving across the southern border of the "Idubi" channel, according to a mission blog post published Oct. 26, 2026. The image was taken by the Mastcam-Z instrument's left eye on Oct. 14, 2026, Sol 2009 of the mission.

The post, written by Margaret Deahn, a Ph.D. candidate at Purdue University, says the lowermost unit at "Tinga" is likely a polymict breccia, made of angular fragments of many rock types. Such breccia generally forms through violent geologic processes such as an impact event, possibly one similar to the impact that created Jezero crater.

The higher-standing, dark rocks may be associated with the nearby olivine-bearing unit at "Idubi," which also appears to extend onto the plains beyond the Jezero crater rim. The team says these rocks may be part of that unit, or may be breccia that was heated, or "baked," when it contacted the hot rocks of "Idubi." Further investigation of the outcrop is needed to determine how the high-standing rocks relate to the broader unit.