Greeley (Martian crater)
Greeley is a huge impact crater in the northwest of Noachis quadrangle of Mars, located at 36.79°S latitude and 3.2°E longitude. It is 457 kilometers in diameter. It was named after the American geologist Ronald Greeley. The name was approved on April 11, 2015 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).