EARTH GEOLOGY EARTHQUAKES VOLCANOES SINKHOLES & LAND SUBSIDENCE LANDSLIDES & MASS MOVEMENTS WEATHER PHENOMENA OCEAN & COASTAL PHENOMENA NATURAL PHENOMENA HUMAN IMPACTS ON EARTH SYSTEMS SINKHOLES & LAND SUBSIDENCE LANDSLIDES & MASS MOVEMENTS WEATHER PHENOMENA OCEAN & COASTAL PHENOMENA NATURAL PHENOMENA HUMAN IMPACTS ON EARTH SYSTEMS STRANGE SOUNDS MYSTERY BOOMS THE HUM SKY TRUMPETS SPACE SOUNDS OCEAN SOUNDS ANIMAL SOUNDS SONIC WONDERS BROADCASTS SKY STRANGE CLOUDS STORM STRUCTURE ATMOSPHERIC OPTICS AURORAS & PLASMA PHENOMENA MYSTERIOUS OBJECTS & LIGHTS MAN-MADE SKY PHENOMENA STORM STRUCTURE ATMOSPHERIC OPTICS AURORAS & PLASMA PHENOMENA MYSTERIOUS OBJECTS & LIGHTS MAN-MADE SKY PHENOMENA SPACE ASTRONOMICAL EVENTS SOLAR & SPACE WEATHER PLANETARY GEOLOGY & IMPACTS ALIEN LIFE & HABITABILITY SOLAR SYSTEM MYSTERIES COSMIC MYSTERIES SPACE EXPLORATION & OBSERVATION ASTRONOMICAL EVENTS SOLAR & SPACE WEATHER PLANETARY GEOLOGY & IMPACTS ALIEN LIFE & HABITABILITY SOLAR SYSTEM MYSTERIES COSMIC MYSTERIES SPACE EXPLORATION & OBSERVATION ANIMALS & NATURE ANIMAL ANOMALIES & MASS DIE-OFFS PREHISTORIC EARTH LIVING EARTH ODDITIES MASS DIE-OFFS ANIMAL ANOMALIES & MASS DIE-OFFS PREHISTORIC EARTH LIVING EARTH ODDITIES CONTACT // REPORT EARTH GEOLOGY EARTHQUAKES VOLCANOES SINKHOLES & LAND SUBSIDENCE LANDSLIDES & MASS MOVEMENTS WEATHER PHENOMENA OCEAN & COASTAL PHENOMENA NATURAL PHENOMENA HUMAN IMPACTS ON EARTH SYSTEMS SINKHOLES & LAND SUBSIDENCE LANDSLIDES & MASS MOVEMENTS WEATHER PHENOMENA OCEAN & COASTAL PHENOMENA NATURAL PHENOMENA HUMAN IMPACTS ON EARTH SYSTEMS STRANGE SOUNDS MYSTERY BOOMS THE HUM SKY TRUMPETS SPACE SOUNDS OCEAN SOUNDS ANIMAL SOUNDS SONIC WONDERS BROADCASTS SKY STRANGE CLOUDS STORM STRUCTURE ATMOSPHERIC OPTICS AURORAS & PLASMA PHENOMENA MYSTERIOUS OBJECTS & LIGHTS MAN-MADE SKY PHENOMENA STORM STRUCTURE ATMOSPHERIC OPTICS AURORAS & PLASMA PHENOMENA MYSTERIOUS OBJECTS & LIGHTS MAN-MADE SKY PHENOMENA SPACE ASTRONOMICAL EVENTS SOLAR & SPACE WEATHER PLANETARY GEOLOGY & IMPACTS ALIEN LIFE & HABITABILITY SOLAR SYSTEM MYSTERIES COSMIC MYSTERIES SPACE EXPLORATION & OBSERVATION ASTRONOMICAL EVENTS SOLAR & SPACE WEATHER PLANETARY GEOLOGY & IMPACTS ALIEN LIFE & HABITABILITY SOLAR SYSTEM MYSTERIES COSMIC MYSTERIES SPACE EXPLORATION & OBSERVATION

ANIMALS & NATURE ANIMAL ANOMALIES & MASS DIE-OFFS PREHISTORIC EARTH LIVING EARTH ODDITIES MASS DIE-OFFS ANIMAL ANOMALIES & MASS DIE-OFFS PREHISTORIC EARTH LIVING EARTH ODDITIES Volcano Science Explained Discover how volcanoes form, where magma comes from and why tectonic plates, mantle plumes, gases and underground plumbing systems control eruption behavior. The guide covers magma, lava, magma chambers, volcanic gases, hotspots, plate boundaries and the main styles of volcanic eruption. Explore volcano science → Volcano Types Explained Volcanoes develop into many different shapes and systems, from broad shield volcanoes and steep stratovolcanoes to lava domes, fissures and cinder cones. This pillar also connects to deeper guides about calderas , supervolcanoes , mud volcanoes and submarine volcanoes and seamounts . Compare the main types of volcanoes → Volcanic Hazards Explained Volcanoes produce far more than lava. Eruptions can generate pyroclastic flows, ashfall, toxic gases, ballistic projectiles, landslides, volcanic earthquakes and tsunamis. The hazards pillar also links to a dedicated guide about lahars , the fast-moving volcanic mudflows that can travel far beyond an eruption site. Explore volcanic hazards → Volcano Monitoring & Forecasting Scientists monitor volcanoes for earthquake swarms, ground deformation, gas changes, thermal anomalies and other signs that magma or fluids may be moving underground. This guide explains volcano observatories, GPS, satellite InSAR, gas monitoring, thermal imaging, alert levels and the limits of eruption forecasting. See how active volcanoes are monitored → Volcanic Regions of the World Most volcanoes occur along subduction zones, continental rifts, ocean ridges and volcanic hotspots. These geological settings create distinct volcanic regions with different eruption styles and hazards. Explore dedicated regional guides covering the Cascades, Hawaii, Iceland, Japan, Indonesia, the Philippines, Italy, the Canary Islands, Kamchatka, New Zealand, the Andes, the African Rift and Yellowstone. Cascade Volcanoes Hawaiian Volcanoes Iceland Volcanoes Japanese Volcanoes Indonesian Volcanoes Philippine Volcanoes Italian Volcanoes Canary Islands Volcanoes Kamchatka Volcanoes New Zealand Volcanoes Andean Volcanoes African Rift Volcanoes Yellowstone Supervolcano & Hydrothermal System Explore Yellowstone’s caldera history, magma and hydrothermal systems, earthquakes, ground deformation, hazards and ongoing scientific monitoring. Continue with the dedicated guide to Yellowstone geysers and hydrothermal features . Explore volcanic regions → Historic Volcanic Eruptions Some eruptions changed cities, climates and scientific understanding. This cornerstone guide examines major events including Vesuvius AD 79, Laki 1783, Tambora 1815, Krakatoa 1883, Novarupta 1912, Mount St. Helens 1980, Pinatubo 1991, Eyjafjallajökull 2010, Hunga Tonga 2022 and Yellowstone’s prehistoric eruptions. Each eruption is explored through its geological setting, Volcanic Explosivity Index, hazards, human impacts, climate effects and continuing relevance today. Explore major eruptions through history → Understanding Earth’s Volcanic Systems Volcanoes are not isolated mountains. They are evolving systems shaped by tectonics, magma movement, gases, groundwater and the surrounding landscape. Use the main pillars above to move from a broad overview into increasingly detailed guides about specific volcanic processes, hazards, regions and eruption histories. Terms of Service affiliate disclaimer CONTACT//REPORT Privacy Overview