The caldera-forming eruptions at Yellowstone are sourced from reservoirs of rhyolitic melt. That's silica-rich magma, the volcanic equivalent of granite, sticky and viscous and slow-moving ...

Filming volcanoes is akin to the privilege of ... gimbal at 18,000 feet altitude to film into the caldera. We arrived in Mexico City and rigged the helicopter with a gyro-stabilised system ...

HAWAII VOLCANOES NATIONAL PARK (HawaiiNewsNow) - The fourth eruptive episode in the summit eruption of Kilauea volcano has come to an end. The U.S. Geological Survey Hawaiian Volcano Observatory ...

Mexico's Colima volcano erupted early Thursday morning, sending ash more than a mile into the sky and lava flowing down its sides. Photo: Webcams de Mexico via Storyful.

The current eruption began at 6:41 p.m. Monday in Hawaii Volcanoes National Park. This is the seventh episode of the eruption within the summit caldera, Kaluapele, that began Dec. 23. Fountain-fed ...