The eruptions at Kilauea prompted closures at a national park and part of a highway because of falling glassy volcanic fragments, including ash.

Hawaii's Kīlauea volcano's latest eruptive episode produced arching bands of red lava higher than some skyscrapers.

Back in January, SFGATE was on the ground in the national park during a previous eruption episode that also rained tephra ...

Authorities reported tephra fall—including ash, Pele’s hair, and larger fragments—across Hawaiʻi Volcanoes National Park.

A vast eruption beneath the southwest Pacific Ocean has been confirmed as the largest volcanic event ever recorded on the ocean floor. The 2012 explosion at the Havre volcano, near New Zealand, ...

Learn more about the Echinus Geyser at Yellowstone Park, which recently erupted, but may not sustain into the summer.