'Out of Nowhere': NASA’s Perseverance Rover Discovers ‘Skull Hill,’ a Strange Martian Rock Formation

NASA’s Perseverance rover discovered a mysterious, skull-shaped rock on Mars called “Skull Hill.” Its dark color and odd features suggest it may have formed far from where it was found.

NASA's Perseverance Rover Discovers 'Skull Hill' On Red Planet

Source : NASA

NASA’s Perseverance rover has stumbled upon a strange and striking discovery on Mars — a dark, angular rock formation eerily resembling a skull. Spotted on April 11 during the rover’s descent of a slope dubbed Witch Hazel Hill, the unusual formation, now nicknamed “Skull Hill,” is raising questions among scientists about its origins.

The feature stands out starkly against the surrounding light-toned, dusty terrain of the Jezero Crater — a 28-mile-wide basin believed to have once held a lake. According to Margaret Deahn, a Ph.D. student at Purdue University working with NASA, “Skull Hill” appears dramatically out of place. “While most of the terrain is light-coloured and dusty, Skull Hill is dark, angular, and covered in tiny pits — as if it had been dropped there from somewhere else,” Deahn wrote in a blog post.

That idea might not be far off. Deahn explains that the rock could be what geologists refer to as “float” — material transported from its original location by processes such as erosion, ancient impacts, or powerful Martian winds.

Initially, the rock's unusual look had some wondering whether it might even be a meteorite. Similar dark rocks found in Gale Crater by the Curiosity rover were confirmed to be iron-nickel meteorites. But recent data collected by Perseverance’s SuperCam suggests a different story for Skull Hill — one not consistent with a meteoritic origin.

You can also read more about the meteorites previously found by the Curiosity rover in Gale Crater at this link: https://www.jpl.nasa.gov/news/curiosity-mars-rover-checks-odd-looking-iron-meteorite. Still, the mystery is far from solved. “Alternatively, ‘Skull Hill’ could be an igneous rock eroded from a nearby outcrop or ejected from an impact crater,” NASA scientists note. The rock’s composition may hold the answer. Dark igneous rocks — often rich in iron and magnesium — contain minerals like olivine and pyroxene, and can be formed through volcanic activity.