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 below the …

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 to the …

Overview of our website: 1) Info about all active volcanoes in the world; 2) Volcano photos; 3) Earthquake information; 4) Tours and expeditions to active volcanoes, walking and study holidays in …

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 dissolved …

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...

Jul 5, 2023 · Volcano [All terms] Cinder Cone Volcanoes Cinder cones are small volcanoes that consist of volcanic ash, cinders, and other types of tephra that has piled up around a vent. Cinder cones are …

Feb 25, 2025 · From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic geological events on the planet. Volcanoes are cracks in Earth's crust that allow molten …

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 planets …

Jul 7, 2018 · Overall, 44 volcanoes were in continuing eruption status as of 19 September 2025. An eruption marked as "continuing" does not always mean persistent daily activity, but indicates at least …