PASADENA, Calif., Dec. 8 (UPI) -- If it was a real pie, it'd be the largest in the universe. But alas, it's composed of cold iron-rich rock -- not flour, butter, fruit and sugar. The 1.2-mile wide circle of rumpled Martian crust was likely created by lava flows thousands of years ago.
Captured by the HiRISE camera -- one of six instruments on NASA's Mars Reconnaissance Orbiter -- the strange landform is located in the Athabasca region, an area known for possessing some of the youngest Martian lava flows.