Where is Jezero Crater on Mars?
Jezero sits at 18.41° north, 77.69° east, on the western edge of Isidis Planitia, a flat plain just north of the equator that lies inside an impact basin some 1,200 kilometres wide. The crater is 45 kilometres across and formed about 3.9 billion years ago. It is named after Jezero, a town in Bosnia and Herzegovina; like its namesake, the crater once had a river-fed lake.
Why does Jezero Crater have a delta?
More than 3.5 billion years ago, rivers spilled over the crater wall and filled Jezero with a lake. Two valleys cut through the rim to feed it, Neretva Vallis from the west and Sava Vallis from the north, and a third, Pliva Vallis, drained it to the east, so water flowed through rather than simply pooling. Where the western river met the lake it dropped its sediment in a fan, and that fan is the delta.
The delta rises only about 40 metres above the crater floor, yet it is much of the reason Perseverance was sent here. When NASA chose the site in 2018, it pointed to the delta as a place that could have collected and preserved ancient organic molecules and other possible signs of microbial life, and to clays and carbonates in the lake deposits that are good at keeping such traces.
What has Perseverance done in Jezero Crater?
Perseverance landed on 18 February 2021, with a remnant of the delta in view about 2.3 kilometres to the west. It carried the Ingenuity helicopter, which on 19 April 2021 made the first powered, controlled flight on another planet here and went on to fly 72 times, the last in January 2024. The rover reached the foot of the delta in April 2022 and later climbed out of the crater, reaching the rim on 10 December 2024.
Along the way it has been collecting rock samples for possible return to Earth. One, called Sapphire Canyon, was drilled in 2024 from a rock named Cheyava Falls, in an area called the Bright Angel formation, and NASA says it holds a potential biosignature: something that might have a biological origin but needs more study before anyone can say. The landing point is its own OrbitStudio destination, Perseverance, at 18.44° N, 77.45° E, about 14 kilometres west of the centre point used here.
What does Jezero Crater look like as a 3D print?
It needs exaggeration. With the 45-kilometre crater filling a model 200 mm across, a kilometre of height becomes about 4.4 mm, yet the rover's 500-metre climb to the rim comes out at only about 2 mm, and the 40-metre delta at under 0.2 mm. Take in the country around the crater and both shrink further. A sensible range is 2× to 4×: the rim then stands roughly 4 to 9 mm proud.
The land around the crater falls from the highlands in the west towards the Isidis plain, and exaggeration steepens that slope too, so check the preview before going higher. Even at 4× the delta adds under a millimetre, a faint step against the western wall at most. Perseverance, about three metres long, is roughly 150 times smaller than one 463-metre sample and does not appear; you print the ground it drove across.
What is OrbitStudio?
OrbitStudio turns real NASA elevation data into 3D-printable models. You pick a region of Mars on a globe or a flat map, choose a jigsaw puzzle or a solid ornament, and get ready-to-print files with terrain and borders already separated and coloured. No CAD, no mesh repair. The heights come from the laser altimeter on NASA's Mars Global Surveyor, MOLA, at up to 463 metres per pixel.
Trying it is free and needs no account: pick a region, generate it and turn it around in 3D. Downloading the model — STL files and pre-coloured 3MF files for Bambu Studio or OrcaSlicer — uses one credit from a pass. The generator covers the Moon too.
Other landmarks
The night sky, too
StellarMesh, from the same maker, turns the sky over any place, on any date from 1900 to 2100, into a 3D-printable star map. Its STL is free.