66 named features carry the IAU descriptor Rupes — a scarp or cliff on Mercury, out of 113 in the mapped Solar System.
The IAU assigns each feature class on each world a naming theme. Across the 66 rupes with a recorded origin, 34 categories appear, led by England.
Every one has its own page, on the surface it sits on.
The same descriptor is used on 6 other worlds, for 47 more features.