| Hell's Half Acre Lava Field(expression, name, volcano, geology) |
| Henry's Fork Caldera(expression, name, volcano, geology) |
| Hohentwiel(name, volcano, geology) |
| Huckleberry Ridge Tuff(expression, name, volcano, geology) |
| Jingu Seamount(expression, name, volcano, geology) |
| Kammu Seamount(expression, name, volcano, geology) |
| Kari-Kari(name, volcano, geology) |
| Kimmei Seamount(expression, name, volcano, geology) |
| King Island Pluton(expression, name, volcano, geology) |
| Koko Guyot(expression, name, volcano, geology) |
| Kure Atoll(expression, name, volcano, geology) |
| Laidlaw Volcanics(expression, history, geochronology, volcanics) |
| Laysan(name, volcano, geology) |
| Luingo(name, volcano, geology) |
| Mendip Hills(expression, history, geochronology, volcanics) |
| Mesa Falls Tuff(expression, name, volcano, geology) |
| Midway Atoll(expression, name, volcano, geology) |
| Millunu(name, volcano, geology) |
| Misery Kimberlite Complex(expression, name, volcano, geology) |
| Mole Hill(expression, name, volcano, geology) |