NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Chasma Boreale. Satellite image of a the Chasma Boreale, a deep canyon that cuts into the raised piece of land known as Planum Boreum in Mars' north polar region. The canyon extends for 570 kilometres into the ice cap, is up to 100 kilometres wide and features scarps up to 2 kilometres high. This image was generated using data from the Mars Odyssey spacecraft, which is in orbit around Mars.
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