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HVO geologist and helicopter pilot repair a mobile Webcam. Pu‘u ‘Ō‘ō Crater is once again perched above the surrounding crater floor.

As we approach the 100th anniversary of the Hawaiian Volcano Observatory (HVO), we have realized that, while 1912 has long been recognized as the year...

Unbeknownst to many people, Frank A. Perret actually began the work of the Hawaiian Volcano Observatory (HVO) in the summer of 1911. (Thomas A. Jaggar...

Video showing the lava lake deep within Halema‘uma‘u vent.
 

A near-vertical look inside the vent cavity of the Halema‘uma‘u Overlook vent. Overflows from the lava pond in Pu‘u ‘Ō‘ō and numerous spattering...

Video showing the refilling of Pu‘u ‘Ō‘ō over the past two months.

On May 21, 2011, Grímsvötn volcano awoke from a 7-year eruptive slumber, producing an ash and gas plume about 17 km (10.6 miles) high. The eruption...

Aerial view of the perched lava lake in Pu‘u ‘Ō‘ō crater.

In May 1922, the scene at Halema‘uma‘u Crater in Kīlauea Caldera was spectacular. The level of lava within the crater had been rising since November...

Kīlauea is the most studied volcano in the world. You'd think that, after a century of scientific scrutiny, we'd have it completely figured out by now...