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These are summarized in the table below: Vent lava spatter and lava flows, cinders and tuff at Waha Pele.Spatter cone erupted pahoehoe and ʻAʻā basalt lava flows.Tholeiitic basalt, indicative of the submarine subphase of the volcano's construction, has been found in wells driven into the volcano at a depth of 75 ft (23 m).These lavas persisted until an estimated 130,000 years ago.i, behind Kīlauea and Mauna Loa.Hualālai is estimated to have risen above sea level about 300,000 years ago.Despite maintaining a very low level of activity since its last eruption in 1801, Hualālai is still considered active, and is expected to erupt again some time within the next century.Data collected showed that the lava flows there originated in shallow water 500 to 1,000 m (1,600 to 3,300 ft) deep, and that unlike similar slumps at other volcanoes, the slump at Hualālai formed gradually.
For comparison, almost all of Kīlauea and Mauna Loa is listed as threat levels 1 through 3.
i, following Kīlauea and the much larger Mauna Loa.
Its peak stands 8,271 feet (2,521 m) above sea level.
Many prehistoric deposits, as well as those from the 1801 event, contain xenoliths of large size and abundant quantity.
Lava attributed to a shield-stage Hualālai has been found just offshore of the volcano's northwest rift zone.