Tags: Crater.
Isidis Planitia is a plain located inside a giant impact basin on Mars centered at 12.9°N 87.0°E / 12.9; 87.0. It is the third biggest obvious impact structure on the planet after the Hellas and Argyre basins – it is about 1500 km (930 mi) in diameter. Isidis was likely the last major basin to be formed on Mars having formed approximately 3.9 billion years ago during the Noachian Period.
