The European Space Agency has revealed a new image of a remarkable swirling valley on the red planet that could one day be the landing site for ExoMars 2020.
The bird’s-eye view captured by the Mars Express spacecraft reveals a region of more than 205,000 square miles surrounding Mawrth Vallis, where ancient water once carved the shapes of the surface.
This is one of the largest valleys on Mars, and scientists say it may have been habitable up to 3.6 billion years ago.