chevrons: Surface of Mars, photographed by Viking 1 Orbiter, 18th October 1979.
Inadvertently reposted a Viking image this afternoon that had already appeared on ohyeahouterspace last October, so to make up for it: a composite of 9 photographs from the Vk1O High Resolution Mapping mission [f208s07-s15]. Image has been rotated about 30° clockwise for reasons of art; the / edges were originally |.
Image credit: NASA. Composite: AgeOfDestruction.