A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber …

Oct 15, 2025 · Our mission is to provide uninterrupted, real-time updates whenever an earthquake strikes or a volcano erupts — and your donations make this possible. Every contribution, big or …

Molten rock below the surface of the Earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava. Magma is made of molten rock, crystals, and …

Sep 29, 2025 · Volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases. The term volcano can also refer …

Each volcano is somewhat unique, but most volcanoes can be classified into one of several types. The most well-known types of volcanoes are cinder cones, composite volcanoes …

Volcanoes are Earth’s geologic architects. They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive. Their explosive force crafts...

May 21, 2025 · A volcano is an opening in a planet or moon’s crust through which molten rock and gases trapped under the surface erupt, often forming a hill or mountain.

What is a Volcano? A volcano is a vent in Earth's surface where magma, gas, and ash escape. The name is also used for cones of erupted material at the vent. Volcanoes are found on many …

Volcanoes have killed thousands of people and caused some of the most frightening events in human history. This site includes information about volcanoes, their activity, and how they …

Jun 16, 2025 · A volcano is, fundamentally, a geological vent or fissure in the Earth’s crust (or the surface of another planet or moon) through which molten rock, hot gases, ash, and debris …