Srinagar, April 21 -- NASA's Perseverance rover has spotted a strange skull-shaped rock on Mars, puzzling scientists about its origin. Dubbed "Skull Hill," the dark, pitted formation was found on April 11 along the Jezero crater rim using the rover's Mastcam-Z camera.

Standing out starkly from its dusty, light-colored surroundings, Skull Hill features angular edges and tiny pits. "This float rock uniquely contrasts the surrounding light-toned outcrop," NASA said in a statement.

The agency believes the pits may have formed due to erosion or wind scouring. Another theory suggests the rock could be a piece of igneous material ejected by an impact event or eroded from nearby terrain.

NASA also noted Skull Hill's dark tone resembles meteori...