Photo Gallery (U.S. National Park Service)

Illustrations from the Anatomy of a Volcano webpage within the NPS subject site Volcanoes, Craters & Lava Flows at https://www.nps.gov/subjects/volcanoes/index.htm

*The copyright status of these images may vary. Check the copyright status on the image detail pages before you download them.

Illustration of a cinder cone erupting. One-quarter of the mountain is cut away to show the magma conduit and rock layering.

NPS Cinder Cone Diagram

1412 x 2013
0.3 MB

Illustration of a cinder cone erupting. One-quarter of the mountain is cut away to show the magma conduit and rock layering. Labeled surface features include Volcanic bombs, Tephra, Vent, Spatter, Rafted cinder cone, and a lava flow.

NPS Cinder Cone Diagram with L...

1412 x 2013
0.4 MB

Illustration of a composite volcano peak erupting. One-quarter of the mountain is cut away to show features below ground. Above ground features include lava flows, steam vents, snow fields, a landslide, and a large ash plume from the mountain top vent.

USGS-NPS Composite Volcano Dia...

2404 x 3300
0.7 MB

USGS-NPS Shield Volcano Diagra...

2404 x 3300
0.8 MB

Illustration of a broad and low shield volcano erupting. Surface lava flows and steam vents are shown.

USGS Shield Volcano Diagram

1941 x 3300
0.7 MB

Illustration of a broad and low shield volcano erupting. Surface lava flows and steam vents are shown. Feature labels include Fire fountain, Lava flow, Laze plume, Vent, Lava flow field, Tephra, Vog (volcanic smog), Breakout, and Lava tube.

USGS-NPS Shield Volcano Diagra...

1941 x 3300
0.9 MB

Illustration showing size comparisons for 3 types of volcanoes (in decreasing order): Shield volcano, Composite volcano, and Cinder cone volcano. The simplified mountain profiles feature Mouna Loa (Shield volcano), Mount Rainier (Composite volcano), and Capulin Volcano (Cinder cone volcano).

NPS Volcano Size Comparison Di...

1370 x 1933
0.2 MB

Illustration of volcanic features of a caldera-forming eruption. The foreground is cut away to show magma conduits and rock layers. Caldera ring-faults are labeled near the ground surface, and surface features include ash and steam plumes.

NPS Explosive Caldera Diagram

1746 x 2974
0.6 MB

Illustration of a Maar explosion showing features above and below the ground surface. Below the surface, magma conduits are shown and an explosive interaction of magma a ground water is depicted. The ground surface shows a large crater with an ash cloud rising from it. Labels include Zone of confinement, Magma-water interface, Water, Water table, surge, and Air fall.

NPS Maar Diagram

2891 x 3750
1.0 MB

Illustration showing a cross section of a lava dome. The magma conduit is shown beneath the ground surface and colors indicate levels of heat within the dome decreasing toward the surface. Surface feature labels include Breccia; Flow banding, Rough, rubbly surface; and Spines.

NPS Lava Dome Diagram

1338 x 1711
0.3 MB

A block diagram of a volcanic dike showing features above and below the ground surface. Below the surface, a large vertical magma body is shown and at the surface, the magma feeds linear fissure vents. Labels below the surface include To magma reservoir, Magma movement, dike, dike injection, and Crustal extension. Labels above the ground surface include Non-eruptive fissure, Eruptive fissure, Spatter cone, Lava flow, and Normal faults.

NPS Fissure Volcano Diagram

2055 x 1548
0.4 MB

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