| Poor Knights Islands(expression, name, volcano, geology) |
| Pylon Peak(expression, name, volcano, geology) |
| Rajmahal Traps(expression, name, volcano, geology) |
| Ramadas Volcanic Centre(expression, name, volcano, geology) |
| Rincon volcanic complex(expression, name, volcano, geology) |
| Roque Cinchado(expression, name, volcano, geology) |
| Roque Nublo(expression, name, volcano, geology) |
| Roque de Garachico(expression, name, volcano, geology) |
| Roques de Anaga(expression, name, volcano, geology) |
| Salar Grande(expression, name, volcano, geology) |
| Sezill Volcano(expression, name, volcano, geology) |
| Sierra Blanca(expression, name, volcano, geology) |
| Skukum Group(expression, name, volcano, geology) |
| Slieve Gullion(expression, name, volcano, geology) |
| Solitary Mountain(expression, name, volcano, geology) |
| Spectrum Dome(expression, name, volcano, geology) |
| Spectrum Range(expression, name, volcano, geology) |
| Spences Bridge Group(expression, name, volcano, geology) |
| Suiko Seamount(expression, name, volcano, geology) |
| Sverdrup Basin Magmatic Province(expression, name, volcano, geology) |