The Samara Valles are an elongated set of channels featuring an old valley in the middle of the

Margaritifer Sinus quadrangle The Margaritifer Sinus quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Margaritifer Sinus quadrangle is also referred to as MC-19 (Mars Chart-19) ...

Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury (planet), Mercury. In the English language, Mars is named for the Mars (mythology), Roman god of war. Mars is a terr ...

. It is located at approximately 25.1° south latitude and 19.1° west longitude. They extend 615 km long and were named after the ancient Roman name for modern Somme River,

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

in 1976.

References

Valleys and canyons on Mars Memnonia quadrangle Margaritifer Sinus quadrangle {{Mars-stub