A supervolcano is a large volcanic system capable of producing an eruption with significant global effects. Unlike regular volcanoes, supervolcanoes can erupt more than 1,000 cubic kilometers of material, which can lead to widespread ash fallout and climate changes. The most famous supervolcano is the Yellowstone Caldera in the United States, which has erupted several times in the past. Supervolcanoes form when magma from deep within the Earth accumulates in a large chamber beneath the surface. When pressure builds up, it can cause a massive eruption. These eruptions can create large craters, known as calderas, and can have devastating impacts on the environment and human life.