
Postcard of Halemaumau lava lake circa 1909.
| 1790 - 1924 | Caldera-forming Eruption, Long-lived Summit Lava Lake, and Explosive Eruption |
| 1924 - 1934 | Summit |
| 1952 - 1968 | Summit and East Rift Zone |
| 1969 - 1974 | Mauna Ulu |
| 1971 - 1975 | Summit and Rift Zones |
| 1975 - 1982 | Summit and East Rift Zone |
| 1983 - 1996 | East Rift Zone |