Lexi Krock Note: Some of the text in this feature is adapted from materials produced by the U.S. Geological Survey. An extensive volcano glossary can be found at volcanoes.usgs.gov.

Lava flows come in a great variety of shapes and sizes. Nyiragongo is considered one of the most dangerous volcanoes in the world because of its particularly fast-moving lava, which can flow more ...

(University of Washington) TOPICS: SEATTLE — The Pacific Northwest's most active underwater volcano is showing signs of an impending eruption, potentially occurring before the end of 2025 ...

Save guides, add subjects and pick up where you left off with your BBC account. Composite volcanoes are the most common type of volcano. They can have violent eruptions and can grow bigger as ...