Cairn
| Basic: |
| A cairn is a type of historical site, ceremonial site, outdoor location, landmark, inert artifact, memorial, and pile of rocks. |
| Documentation: |
| Comment: A specialization of #$StationaryArtifact and HumanAccessibleIBO . Each instance of #$Cairn is a mound of stones piled up as a memorial (and thus is a SymbolicObject ) or to mark a boundary (see BoundaryMarker ) or path. |