This is a list of named geological features on asteroid 243 Ida and its moon, Dactyl.
List of geological features on 243 Ida and Dactyl Wikipedia
Idaean regiones (geologically distinct areas) are named after the discoverer of the asteroid, and the places where he worked.
The only named dorsum on Ida is Townsend Dorsum, named after Tim E. Townsend, a member of the Galileo probe imaging team.
Idaean craters are named after famous caves.
Dactylian craters are named after the mythological Dactyls.