14 named features carry the IAU descriptor Vallis — a valley on The Moon, out of 249 in the mapped Solar System.
The IAU assigns each feature class on each world a naming theme. Across the 14 valles with a recorded origin, 10 categories appear, led by Germany.
Every one has its own page, on the surface it sits on.
The same descriptor is used on 4 other worlds, for 235 more features.