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Lava drains back into the East Pond Vent, Pu‘u ‘Ō‘ō, Hawai‘i.

Norris Geyser Basin of Yellowstone National Park has long been recognized as the hottest and most changeable of Yellowstone's famous hydrothermal...

Kīlauea has erupted about 0.13 cubic kilometers (170 million cubic yards) of lava yearly for more than 20 years. That's enough to fill almost 2 1/2...

Lava cascades and gas-piston drainback

Verrrry layyyyzeeee Friday at southeast tip of Kohola

Mostly a tumulus Thursday

The 1840 eruption on Kīlauea's east rift zone was one of the most notable of the past 200 years. People reported a spectacle so awesome that "one...

Sunrise and breakouts on a fine Sunday morning

Scenes along still-active August 9 breakout

Last week, Maurice Sako and Kevan Kamibayashi, physical science technicians from the Hawaiian Volcano Observatory, spent three cold nights high on...