| Represents planetary structures that are part of the cryosphere and that have a primary substance composition of a ice. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •PhysicalEndurant |
| •PhysicalObject |
| •NonAgentivePhysicalObject |
| •PhysicalBody |
| •BodyOfIce |
| •PhysicalPlace |
| •PlanetaryStructureObject |
| •BodyOfIce |