NASA’s Curiosity Uncovers Striking Polygons at the Bottom of a Martian Hollow
SMRTR summary
NASA's Curiosity rover discovered striking geometric polygons formed by raised ridges on Martian bedrock while exploring the Monte Grande boxwork hollow in Gale Crater during December 2025. These polygon formations were created billions of years ago when groundwater deposited minerals in rock fissures, which later hardened and remained exposed after wind erosion removed softer surrounding material, providing evidence of ancient water activity on Mars.
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