Mt. Saint Helens
Thomas & Pat Leeson
Mt. St. Helens Erupting
Thomas & Pat Leeson
Mauna Loa Eruption #1
Phil Degginger
White Island Volcano, New Zealand
G. R. Roberts
Molokini Island, Maui, Hawaii #1
Douglas Peebles
Volcanic Crater Lake
Okapia
Volcanic Crater, Lazio, Italy
Tim Holt
Crater Lake #1
U.S. Geological Survey
Volcanic Eruption
Mark Newman
Wizard Island In Crater Lake
George Ranalli
Phantom Ship In Crater Lake
Jim Corwin
Floor Of Kilauea Iki Crater
Greg Dimijian
Boat Touring Crater Lake
Ron Sanford
Helicopter Flight Over Active Crater
Greg Dimijian
Ngorongoro Crater
Gregory G. Dimijian, M.D.
Mount St. Helens #2
Jim Corwin
Surtsey Island, Iceland
Omikron
Kilauea Rift
Soames Summerhays
Sulfur Fumes
Photo Researchers
Sierra Negra
Tierbild Okapia
Mt. Adams And Mt. St. Helens, Wa
Calvin Larsen
Honolulu, Oahu, Hawaii
Science Source
Mount Pinatubo Caldera
Stephen & Donna O'Meara
Mount Pinatubo Caldera #1
Stephen & Donna O'Meara
Lightning Striking Talbachic Volcano
Mark Newman
Molokini Island, Maui, Hawaii
Douglas Peebles
Molokini Island, Maui, Hawaii #2
Douglas Peebles
Molokini Island, Maui, Hawaii #3
Douglas Peebles
Molokini Island, Maui, Hawaii #4
Douglas Peebles
Auckland New Zealand From Mount Eden
William H. Mullins
Lubriano, Italy, Infrared Photo #2
Tim Holt
Lubriano, Italy, Infrared Photo
Tim Holt
Lubriano, Italy, Infrared Photo #1
Tim Holt
Lubriano, Italy, Infrared Photo #3
Tim Holt
Mt. St. Helens
Jim Corwin
Volcanic Eruption
Jack Fields
Phantom Island Ship In Crater Lake
Ellen Thane
Sheer Walls Of The Crater Lake Caldera
Ellen Thane
Nevado Del Ruiz Volcano, Colombia
NASA/Science Source
Kilauea Volcano
Soames Summerhays
Kilauea Rift #1
Soames Summerhays
Kilauea Volcano #1
Soames Summerhays
The Phantom Ship Reflected
John R. Foster
Haleakala, Hawaii
David Weintraub
Volcanic Structure
Spencer Sutton
Crater Lake Ringed By Steep, Fir Clad
Ellen Thane
Crater Lake And Fir Lined Slopes
Ellen Thane
Crater Lake With Wizard Island
Ellen Thane
Crater Lake Lodge
Ellen Thane
Crater Lake With Wizard Island #1
Ellen Thane
Volcanic Basalt
Science Source
Crater Lake #2
U.S. Geological Survey
Crater Lake
U.S. Geological Survey
Crater Of Mount Redoubt
Joseph Rychetnik
Crater Of Vesuvius
Science Source
Crater Of Mount Vesuvius, Before 1767
Wellcome Images
Crater Lake, Wizard Island, Oregon
Theodore Clutter
Crater Lake, Wizard Island, Oregon #1
Theodore Clutter
Crater Lake, Wizard Island, Oregon #2
Theodore Clutter
Stromboli Volcano
Stephen & Donna O'Meara
Arenal Volcano Erupting #1
Gregory G. Dimijian
Eruption Cone, La Fournaise
Adam Sylvester
Halemaumau Crater, Hawaii #1
Douglas Peebles
Koko Crater, Oahu, Hawaii #2
Douglas Peebles
The Smoking Crater Of The Active
Science Source
The Smoking Crater Of The Active #1
Science Source
Smoking Crater Of The Volcano Kilauea
Science Source
Devils Throat Pit Crater
Greg Dimijian
Dolomieu Crater Erupting
Adam Sylvester
Devils Throat Crater, Kilauea, Hawaii
Gregory G. Dimijian, M.D.