Volcanoes are formed by a fissure in the earth's crust through which molten lava and gases erupt. These formations are usually found on diverging or converging tectonic plates or above mantle plumes, in places called hotspots. There are numerous types of volcanoes: fissure vents, shield volcanoes, cinder cones, stratovolcanoes, cryptodomes, submarine volcanoes, supervolcanoes and many more.
On a climate change scope, man-made emissions can make the consequences of volcanic eruptions much more severe.

Lava whirlwind swirls at Kilauea volcano

Volcano 'music' may help us predict eruptions

Kilauea's eruptions drive metamorphosis of Halemaumau Crater

What are those green gems in Kilauea's lava?

Exploding lava creates new danger as Kilauea flows into the sea

Lava from Kilauea evaporates Hawaii's largest freshwater lake in just hours

Why Guatemala's Volcan de Fuego is scarier and deadlier than Kilauea

25 surreal images and videos of Hawaii's Kilauea volcano eruption

Kilauea's blue flames spark fear of explosions

When it comes to volcanoes, what is laze?

11 images of volcanoes as seen from space

Dogs found safe 10 days after they bolted during volcano evacuation