• 14 Videos, Slides, Films

• 13 Historical geology
• 13 Physical geography
• 13 Plate tectonics
• 12 Internal structure
• 5 Geology
• 5 Volcanoes
• 4 Geography
• 2 Volcanism
• 1 Alps
• 1 Atmosphere
• 1 Catastrophes (Geology)
• 1 Effect of environment on
• 1 Eruptions
• 1 Indian Ocean Tsunami, 2004
• 1 Origin
• 1 Oxygen
• 1 Tsunamis
• 1 Volcanic eruptions
• 1 Volcanic gases

• 14 Films Media Group
• 2 Infobase
• 1 American Museum of Natural History

• 14 English

• 1 California
• 1 Death Valley (Calif. and Nev.)
• 1 Hawaii
• 1 Iceland
• 1 Indian Ocean Region
• 1 Indonesia
• 1 Italy
• 1 Krakatoa
• 1 Krakatoa (Indonesia)
• 1 Rocky Mountains
• 1 Solar system
• 1 Vesuvius (Italy)
• 1 Yellowstone National Park
• 1 Yosemite National Park (Calif.)
• 1 Yosemite National Park Region (Calif.)

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