The most common perception of a volcano is of a conical mountain, spewing lava and poisonous gases from a crater at its summit; however, this describes just one of the many types of volcano. The …

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 …

Nov 26, 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 …

Apr 17, 2023 · Hawaii Volcanoes National Park contains Kilauea, the most active volcano in the United States. Yellowstone National Park is the site of some of the largest volcanic eruptions known to have …

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 planets …

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 …

3 days ago · Data from Axial, the most-monitored underwater volcano, are helping geophysicists hone eruption predictions. For Axial, 2026 is their next bet.

Jul 7, 2018 · There are 44 volcanoes with continuing eruptions as of the Stop Dates provided, and as reported through 19 September 2025. Although detailed statistics are not kept on daily activity, …