Vedra Valles [SEP] located on astronomical body
Vedra Valles
Vedra Valles is an ancient river valley in the Lunae Palus quadrangle of Mars, located at 19.4° N and 55.6° W. It is 115.0 km long and was named after an ancient river in Great Britain.
Together with other ancient river valleys, it has provided strong evidence for a great deal of running water on the surface of Mars. 
See also.
- Geology of Mars
- HiRISE
- Lunae Palus quadrangle
- Outflow channels
States. The name for the whole system of canyons is Valles Marineris. Starting at the west with Noctis Labyrinthus in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle with Capri Chasma and Eos Chasma (in the south). The word Chasma has been designated by the International Astronomical Union to refer to an elongate, steep-sided depression. Valles Marineris was discovered by and named for the Mariner 9 mission. Moving east from Noctis Labyrinthus, the canyon splits into two troughs, Tithonium Chasma and Ius