Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Lava river flowing at night in Hawaii Volcanoes National Park, Hawaii. --- Image by © Frans Lanting/Corbis
Lava flow --- Image by © Don Hammond /Design Pics/Corbis
22 Aug 2005, Bromo Tengger Semeru National Park, Java, Indonesia --- August 22, 2005 - Semeru eruption, Java Island, Indonesia. --- Image by © Stocktrek Images/Corbis
An active volcano spews out hot red lava and smoke.
November 2006 - Boulder rolling in lava flow at dusk during eruption of Mount Etna volcano, Sicily, Italy.
March 19, 2011 - Eruption of ash cloud from Mount Bromo volcano, Tengger Caldera, Java, Indonesia.
January 1, 2010 - Explosive Vulcanian eruption of lava on Sakurajima Volcano, Japan.
July 2004 - Nighttime eruption of natrocarbonatite lava flows from hornito at Ol Doinyo Lengai volcano, Tanzania, Africa.
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Kilauea Volcano, Pu'u O'o Rift eruption fountaining --- Image by © Greg Vaughn/Design Pics/Corbis
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea, Pu'u O'o eruption, close-up fountaining action --- Image by © Greg Vaughn/Design Pics/Corbis
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Hawaii Volcanoes National Park, Molten lava seen through hole in lava tube. --- Image by © Allan Seiden/Design Pics/Corbis
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, near Kalapana, Close-up of pahoehoe lava flowing from Kilauea into Pacific Ocean. --- Image by © Ron Dahlquist/Design Pics/Corbis
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of molten pahoehoe lava flowing downward. --- Image by © Ron Dahlquist/Design Pics/Corbis
Lava --- Image by © Don Hammond /Design Pics/Corbis
25 Oct 2004, Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- October 25, 2004 - Kilauea Pahoehoe lava flow, Big Island, Hawaii. --- Image by © Stocktrek Images/Corbis
10 May 2010, Iceland --- Eyjafjallajokull eruption, Iceland. May 10, 2010 --- Image by © Stocktrek Images/Corbis
Kilauea Volcano, Big Island --- Image by © 145/Sami Sarkis/Ocean/Corbis
March 19, 2011 - Eruption of ash cloud from Mount Bromo volcano, Tengger Caldera, Java, Indonesia.
December 12, 2005 - Eruption of ash cloud from Santiaguito dome complex, Santa Maria volcano, Guatemala.
May 19, 2008 - Ash cloud from vulcanian eruption of Anak Krakatau volcano, Sunda Strait, Java, Indonesia.
December 26, 2007 - Eruption of ash cloud from Santiaguito dome complex, Santa Maria volcano, Guatemala.
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Hawaii Volcanoes National Park, Pahoehoe lava, extreme close-up, layered texture glowing in between --- Image by © Philip Rosenberg/Design Pics/Corbis
Hawaii, Big Island, Hawaii Volcanoes National Park, Mauna Loa eruption, lava flowing, steam rising. --- Image by © Joe Carini/Design Pics/Corbis
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of molten lava. --- Image by © Ron Dahlquist/Design Pics/Corbis
Hawaii Volcanoes National Park, Island of Hawaii, Hawaii, USA --- Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of molten pahoehoe lava flow. --- Image by © Ron Dahlquist/Design Pics/Corbis