Goldstone Vallis
Encyclopedia
Goldstone Vallis is a valley on Mercury
Mercury (planet)
Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits...

 located at 15.8 S, 31.7 W. It is named after Goldstone Observatory. While it superficially resembles a graben
Graben
In geology, a graben is a depressed block of land bordered by parallel faults. Graben is German for ditch. Graben is used for both the singular and plural....

, it is actually a chain of overlapping secondary craters.
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