• Halema`uma`u Just Before Dawn

    Hawai'i Volcanoes

    National Park Hawai'i

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  • April 22, 2014 - Temporary Closure of Mauna Loa Strip Road

    During the week of the 51st Annual Merrie Monarch Festival in Hilo, Hawaii, travel on the Mauna Loa Strip Road in Hawai‘i Volcanoes National Park will be restricted to hiking, biking and official motor vehicle traffic only. More »

1969 - 1974 Eruption of Mauna Ulu

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Did You Know?

`a`a flowing over an older flow of pahoehoe.

The two types of Hawaiian lava differ in appearance but are chemically alike. Pahoehoe has a smoother and ropey surface where a`a is jagged and clinkery.