Hellas Planitia

Hellas Planitia is a massive, ancient impact basin on Mars, roughly 2,300 kilometers wide and 7 kilometers deep. It formed over 3.9 billion years ago when a huge asteroid or comet collided with the planet, creating one of the largest visible craters in the Solar System. The basin's low elevation and thick, mineral-rich sediments suggest it once held a lot of water, making it a significant site for studying Mars’ geological history and potential past habitability. Today, it remains a prominent feature in Mars' southern hemisphere, known for its rugged terrain and scientific interest.