Fan of abseiling? Why not try climbing down a crater on Mars?
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NASA's Awesome Vintage-Style Posters Will Make You Want To Walk On Mars
![Mars Explorers Wanted Posters](https://assets.heart.co.uk/2016/25/mars-explorers-wanted-posters-5-1466427367-view-2.jpg)
2. Fan of abseiling? Why not try climbing down a crater on Mars?
Picture: Nasa Mars Mission