kohl: Mars, photographed by Mars Express, 30th October 2004.
From 27°N 303°E, in the vicinity of Lobo Vallis (named for a river in Côte d’Ivoire). This area is north of Lunae Planum, where Echus Chasma flows out through Kasei Vallis into Chryse Planitia.
Detail of a longer image strip.
Image credit: ESA.