SWEET Ontology
type: Ontology
version info: 2.3
imports: realmLandform.owl
imports: reprSpaceGeometry.owl
imports: realm.owl
imports: rela.owl
imports: relaSpace.owl
imports: propSpaceHeight.owl

Alpine
type: Class
subclass of: MountainRegion
comment: Alpine region is one above the tree line. [Wikipedia]

Hill
type: Class
subclass of: Landform
comment: A hill is a landform that extends above the surrounding terrain, in a limited area. Hills often have a distinct summit, although in areas with scarp/dip topography a hill may refer to a particular section of scarp slope without a well-defined summit (e.g. Box Hill). A hillock is a small hill. [Wikipedia]

Talus
type: Class
subclass of: MountainRegion
comment: A slope formed at the base of a steeper slope, made of fallen and disintegrated materials.

Ubac
type: Class
subclass of: MountainRegion
comment: The shady (usually poleward) side of a mountain.