The collapse volume at the summit nearly matched the effused lava volume on the rift zone. In this regard, 1868 was a little ...

Kilauea and Mauna Loa each have two major rift zones that radiate away from the volcano summits, and rift zone eruptions are common. Mauna Loa’s 2022 eruption, and Kilauea’s 1983–2018 Pu‘u ...

March 27 marks the anniversary of the onset of Mauna Loa’s dramatic 1868 eruption, when lava flows from the Southwest Rift Zone severely impacted the Ka‘u district. However, this may not have been the ...

Still, there seems to be enough evidence that some sort of collapse occurred at Mauna Loa’s summit in 1868, which remains notable as the only such event in the volcano’s documented history.