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Images Dated 11th June 1991

Choose from 11 pictures in our Images Dated 11th June 1991 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

View of the Valles Marineris canyon system, Mars Featured 11 Jun 1991 Print

View of the Valles Marineris canyon system, Mars

Oblique view of the central region of the giant Valles Marineris canyon system on Mars, computer- processed from Viking spacecraft imagery & topographic maps of the planet. The Valles Marineris is over 3000 km long & up to 8 km deep, dwarfing the Grand Canyon of Arizona. The canyons were formed by a combination of geological faulting, landslides, and erosion by wind and ancient water flows. The central area shown here contains layered deposits which may have been deposited by ancient lakes. The view is looking east, from 30 degrees above the horizon. (Image processing by Alfred McEwen & topographic mapping by Sherman Wu, both at USGS, Flagstaff, Arizona)