At about 10:20 am Hawaii time on April 28, a rockfall sloughing off the wall of Halema'uma'u Crater hit the molten lava beneath, triggering an explosion of magma fragments.
At about 10:20 am Hawaii time on April 28, a rockfall sloughing off the wall of Halema'uma'u Crater hit the molten lava beneath, triggering an explosion of magma fragments.
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