| A geomorphological unit or geographical land form is an element or feature of planetary topography identified with respect to morphological characteristics. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •PhysicalEndurant |
| •PhysicalObject |
| •NonAgentivePhysicalObject |
| •PhysicalPlace |
| •PlanetaryStructureObject |
| •GeomorphologicalUnit |