| Gardner Pinnacles(expression, name, volcano, geology) |
| Great Meteor Seamount(expression, name, volcano, geology) |
| Jotabeche(name, volcano, geology) |
| Juan de la Vega(expression, name, volcano, geology) |
| Laacher See(expression, name, volcano, geology, inactivity) |
| Laguna Escondida(expression, name, volcano, geology) |
| Lake Bolsena(expression, name, volcano, geology, inactivity) |
| Lanzarote(name, volcano, geology) |
| Lauca(name, volcano, geology) |
| Leon Muerto(expression, name, volcano, geology) |
| Lisianski Island(expression, name, volcano, geology) |
| Lone Butte(expression, name, volcano, geology) |
| Lord Howe Island(expression, name, volcano, geology) |
| Los Colorados(expression, name, volcano, geology) |
| Lyttelton Harbour(expression, name, volcano, geology) |
| Macusani(name, volcano, geology) |
| Manus Island(expression, name, volcano, geology) |
| Maro Reef(expression, name, volcano, geology) |
| Mount Bachelor(expression, name, volcano, geology, inactivity) |
| Mount Bailey(expression, name, volcano, geology, inactivity) |