| Cap-Vert(noun, name, volcano, geology) |
| Capital(noun, name, volcano, geology) |
| Cappy Mountain(expression, name, volcano, geology) |
| Capur(noun, name, volcano, geology) |
| Caquena(noun, name, volcano, geology) |
| Caraibes(noun, name, volcano, geology) |
| Carbets(noun, name, volcano, geology) |
| Caribou(noun, name, volcano, geology) |
| Carihuairazo(noun, name, volcano, geology) |
| Cariliao(noun, name, volcano, geology) |
| Cariquima(noun, name, volcano, geology) |
| Casitagua(noun, name, volcano, geology) |
| Cat Hills(expression, name, volcano, geology) |
| Central Segment(expression, name, volcano, geology) |
| Central Slovakia(expression, name, volcano, geology) |
| Centre Hills(expression, name, volcano, geology) |
| Ceyhan-Osmaniye(noun, name, volcano, geology) |
| Ch'Ilalo(noun, name, volcano, geology) |
| Chalpatan(noun, name, volcano, geology) |
| Chalupas(noun, name, volcano, geology) |