Hazards and Processes
Research and Impacts
Volcano Types and Features

There are 5,971 volcano images available on the GVP website, including 4,243 in these new galleries with updated captions and keywords, and at a larger size.

Fissures are elongate vents that produce a range of activity from lava fountaining and lava flows to more explosive events. The volume and extent of resulting lava flows varies greatly. Vents may be kilometers long and the eruption center may change locations throughout an eruption, with different lava flows impacting different areas. As activity is focused in a particular area, spatter ramparts and cones may form. Hazards include lava flows, volcanic gas, ballistic ejecta, volcanic ash, and pyroclastic flows (also called pyroclastic density currents).

Image Gallery for Fissure Vents