Environment ❯ Geology

Volcanic Activity

Archaeological Evidence Mudflows Phlegraean Fields Seismic Monitoring Carbon Dioxide Emissions Hazards Ash and Gas Emissions Hot Springs Ash Clouds Campi Flegrei Eruptions Geothermal Energy Eruption History Impact on Wilderness Pacific Ring of Fire Seismic Zones Pyroclastic Flows

Mount St. Helens, 46 Years Later, Is Quiet Under Watch

Expanded sensors give early warning that supports a continued green alert.

Philippines Elevates Mayon to Alert Level 3 as Dome Collapses Trigger Evacuations

Axial Seamount Unrest Persists With 2025 Eruption Possible, Timing Uncertain

Northern California’s Geysers Geothermal Field Shaken by Over 130 Quakes