14 February 2013 Colour plan view of Tinto Vallis High
Resolution Stereo Camera (HRSC) nadir and colour channel data
acquired during orbit 11,497 on 13 January 2013 by ESA’s Mars
Express spacecraft has been combined to form a natural-colour
view of the Tinto Vallis region. The region imaged, which lies
southwest of Amenthes Rupes and Palos Crater, is centred at
around three degrees south and 109 degrees east, and has a
ground resolution of about 22 metres per pixel. The mouth of
Tinto Vallis, seen clearly in the lower centre of this image, is
believed to have formed 3.7 billion years ago after volcanic
activity warmed and melted subsurface ice, which then escaped to
the surface to form 'sapping valleys'. ESA/DLR/FU Berlin (G.
Neukum). Perspective view of Tinto Vallis This computer-
generated perspective view of Tinto Vallis was created using
data acquired by the High Resolution Stereo Camera (HRSC) on
board ESA's Mars Express spacecraft. Acquired during orbit
11,497 and centred at around three degrees south an