| Ash Pit(expression, volcano, geology, province) |
| Cache Hill(expression, volcano, geology, province) |
| Camp Hill(expression, volcano, geology, province) |
| Caribou Tuya(expression, volcano, geology, province) |
| Cartoona Ridge(expression, volcano, geology, province) |
| Castle Rock(expression, volcano, geology, province) |
| Chakatah Creek Peak(expression, volcano, geology, province) |
| Cinder Cliff(expression, volcano, geology, province) |
| Cinder Mountain(expression, volcano, geology, province) |
| Clinton Creek(expression, volcano, geology, province) |
| Cocoa Crater(expression, volcano, geology, province) |
| Coffee Crater(expression, volcano, geology, province) |
| Cone Glacier Volcano(expression, volcano, geology, province) |
| Cottonwood Peak(expression, volcano, geology, province) |
| Cracker Creek Cone(expression, volcano, geology, province) |
| Crow Lagoon(expression, volcano, geology, province) |
| Dark Mountain(expression, volcano, geology, province) |
| Desolation Lava Field(expression, volcano, geology, province) |
| Dome Mountain(expression, volcano, geology, province) |
| Enid Creek Cone(expression, volcano, geology, province) |