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Mauna Kea, a dormant volcano in the post-shield stage, last erupted about 4,500 years ago. Its oldest exposed lavas are about 250,000 years old.

Some years ago, a series of commercials for a popular doughnut shop was aired on television. In the scene, Fred the baker would leave his house early...

This has been a popular question posed by scientist and citizen alike but is currently a difficult one to answer accurately. It is also one of the...

This coming October 15 will mark one year since last October's damaging earthquakes that rocked Hawai`i County. To briefly recall them, at 7:07 AM on...

Dome fountain over Fissure D vent of the Episode 58 eruption.

Most of us who were in the islands on October 15, 2006, are familiar with ground motion associated with earthquakes. On that day, two quakes, both...

Lava flows from the ongoing eruption of Kīlauea Volcano have traveled only short distances during the past week from the impressive open lava channel...

Long-term evolution of the Episode 58 lava channel.

Pumice is glassy volcanic ejecta so full of bubbles that it floats in water. Reticulite is an extreme form of pumice in which all bubbles have burst...

For the past six weeks, lava erupting from a fissure east of Pu`u `O`o has been flowing on the surface through an open channel and feeding a series of...