1. Complex volcano – Landform of more than one related volcanic centre
2. Confluence – Meeting of two or more bodies of flowing water
3. Continental shelf – Coastal and oceanic landform
6. Cove (mountain) – Small valley in the Appalachian Mountains between two ridge lines
8. Crevasse – Deep crack, or fracture, in an ice sheet or glacier
9. Cryovolcano – Type of volcano that erupts volatiles such as water, ammonia or methane, instead of molten rock
10. Cuesta – Hill or ridge with a gentle slope on one side and a steep slope on the other
