Super Volcanoes
![Picture](/uploads/1/5/7/8/15788826/6696039.jpg?292)
A supervolcano is a volcano on a massive scale. It is different from a volcano because:
- it erupts at least 1,000 km3 of material (a large volcano erupts around 1 km3)
- it forms a depression, called a caldera (a volcano forms a cone shape)
- a supervolcano often has a ridge of higher land around it
- a supervolcano erupts less frequently - eruptions are hundreds of thousands of years apart