Matches in DBpedia 2016-04 for { ?s ?p <http://dbpedia.org/resource/Category:Landforms_of_Clackamas_County,_Oregon> }
- Willamette_River subject Category:Landforms_of_Clackamas_County,_Oregon.
- Willamette_Valley subject Category:Landforms_of_Clackamas_County,_Oregon.
- Zigzag_Mountain subject Category:Landforms_of_Clackamas_County,_Oregon.
- Zigzag_River subject Category:Landforms_of_Clackamas_County,_Oregon.
- Category:Glaciers_of_Clackamas_County,_Oregon broader Category:Landforms_of_Clackamas_County,_Oregon.
- Category:Mount_Hood broader Category:Landforms_of_Clackamas_County,_Oregon.
- Category:Willamette_River broader Category:Landforms_of_Clackamas_County,_Oregon.