Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
large depression in the terrain with snow in the mountains caused by the explosion of a mine in the First World War
View into the lava lake inside the crater of Nyiragongo volcano – this is the largest lava lake on earth. \n\nThe 3470 m high volcano Nyiragongo belongs to the group of Virunga volcanoes in the border triangle of DR Congo, Uganda and Rwanda and is one of the most dangerous volcanoes on earth. The nearby city of Goma (the capital of the Congolese province of North Kivu) is constantly threatened by the nearby volcano.
Barringer Meteor crater near Winslow, Arizona; observation platform visible, showing the immense scale. Weathered rocks, desert plants in the foreground. Clear blue sky in above.
Panoramic image of Lava field Malforado and the crater of vocano Duraznero on Ruta de los Volcanes, Cumbre Vieja, La Palma, Spain. Pico de  Teide volcano on Tenerife visible above the clouds in the background
Ijen volcano, Indonesia
Panorama of Nakadeke Crater, Mt.Aso, Kumamoto Perfecture, Japan
View from the top of Hverfjall volcanic crater in Lake Myvatn region in Northern Iceland.
Ijen volcano crater lake in Indonesia
Meteor Crater impact in Arizona USA 50000 years ago
Volcanic geothermal landscape which consists of chalk, sulfur and algae at thermal springs in volcanic surroundings. The picture is taken at the Sipoholon hot springs in the northern part of Sumatra
Panorama of Meteor crater also known as Barringer crater in Arizona, United States of America
High in the spring mountains of Hachimantai, Iwate Prefecture is the famous formation known as Dragon Eye which attracts many visitors through the spring time as the snow melts.
Image of volcano Caldera Blanca in Lanzarote, Canary Islands, Spain.
Bromo volcano, Indonesia
Crater of a volcano in the day with sunshine and clouds in the sky. Landscape on Iceland of Reykjanes Peninsula. Brown and gray lava rocks and along the rim of the crater
Panoramic view from the top of Hverfjall volcanic crater in Lake Myvatn region in Northern Iceland.
Transmission electron microscope (TEM) micrograph showing dark melanin granules in a melanocyte (top center) and in several keratinocytes, which, unlike melanocytes, have bundles of keratin filaments
Surface photography of nature pattern Crystal shot for background.
Spectacular view from Jododaira, Fukushima Prefecture
Halemaumau crater is a pit crater located within the much larger summit caldera of Klauea in Hawaii Volcanoes National Park. Halemaumau is home to Pele, Goddess of Hawaiian Volcanoes, according to the traditions of Hawaiian mythology. According to the Hawaii Volcano Observatory the crater is currently active, with lava in an open vent fluctuating from 70 to 150 meters below the crater floor.
View of Ijen volcano in Indonesia, which has turquoise-coloured acidic crater lake
Bromo volcano crater on the Java island in east Indonesia.
Taal active volcano. Crater lake is spewing fumaroles of sulfur and steam from the boiling water lake. The volcano is classed a danger zone and its access is prohibited.
Close-up of mud pool at geothermal area of Hverir in Iceland.
Panoramic The Calderon Hondo volcano on the island of Fuerteventura
Scenery of Bisti Northern Section, Farmington, New Mexico, USA
Looking down into Arizona's Meteor Crater along the southern rim.
Lava boulders on eroded softer slopes. Big Bend National Park, Texas.
Solid lava plain near active volcano Tolbachik, Kamchatka, Russia
Mammoth Hot Springs in the Yellowstone Ecosystem of western USA in North America. Nearest cities are Gardiner, Cooke City, Bozeman, Billings Montana, Salt Lake City, Utah, Denver, Colorado and Jackson, Wyoming.
Free Images: "bestof:Volcanic Arc System.png USGS image from http //earthquake usgs gov/learning/glossary php term forearc PD-USGov-Interior-USGS Volcanic Arc System SVG svg"
Geothermal_Hot_Water_System.svg
Geothermal_Vapor_System.svg
Earthquake_wave_paths.svg
Mbta district.svg
Gulf of California moisture surge.svg
AACS dataflow.svg
Appalachian map.svg
Mass Spectrometer Schematic.svg
Appalachian map de.svg
Aluminium_-_world_production_trend_-_ar.svg
Illu_urinary_system.svg
Usgs map mercator-ko.svg
Gulf of California moisture surge with mts.svg
Distribution Map of Puerto Rican Spindalis 2004.svg
Distribution of the Elfin-woods Warbler 2001.svg
Usgs map mercator.svg
Geomagnetic polarity late Cenozoic.svg
PVSolarSystem.svg
Illu_urinary_system_sr.svg
Antarctic expedition map (Amundsen - Scott)-no.svg
Composition of U.S. Long-Term Treasury Debt 2000-2014.svg
World map blank-Americas centred.svg
Antarctic expedition map Amundsen - Scott-ca.svg
Indianapolis.svg
Antarctic expedition map (Amundsen - Scott)-fr.svg
Croton_dam_locatorMap.svg
US-NationalCommunicationsSystem-Seal.svg
PVSolarSystem de.svg
Solar System size to scale tamil.svg
North Pacific Current-nl.svg
SpaceStationCycle.svg
Scheme hysterectomy-en.svg
Central nervous system.svg
Croton_Dam_photo_locator_map_cropped.svg
Oort cloud Sedna orbit.svg
Antarctic expedition map (Amundsen - Scott)-en.svg
Side effects of Oxycodone.svg
Side effects of Hydrocodone.svg
Mass Spectrometer Schematic ar.svg
Mass Spectrometer Schematic DE.svg
Antarctic expedition map (Amundsen - Scott)-de.svg
Scheme hysterectomy-de.svg
Schemat spektrometru mas.svg
Wind generator system-vectorised.svg
Antarctic expedition map (Amundsen - Scott)-es.svg
Antarctic expedition map (Amundsen - Scott)-he.svg
Oort cloud Sedna orbit-th.svg
Earth-crust-cutaway-magyar.svg
North Pacific Currents-Kuroshio-nl.svg
Africa98.svg
Asia98.svg
Europe98.svg
Oceania98.svg
South_america98.svg
Sir_William_Richard_Gowers_Parkinson_Disease_sketch_1886.svg
Mount Mazama eruption timeline 2.svg
Mount Mazama eruption timeline 3.svg
Mount Mazama eruption timeline 4.svg
Mount Mazama eruption timeline 1.svg
Side effects of alprazolam.svg
Education in the United States.svg
Illu urinary system numbers.svg
CartesianPlane.svg
North_america98.svg
Lymphatic_system_(vector).svg
PD Diagram of swine flu symptoms EN.svg
Cartesian coordinate system (comma).svg
Phylogenetic tree hu.svg
Effects of sleep deprivation.svg
Stomach diagram ca.svg
Innate_Immune_cells_-_ru.svg
Illu_pancrease-num.svg
Illu_pancrease_ln.svg
Diagram of swine influenza symptoms EN.svg
Diagram of influenza infection symptoms EN.svg
Solar System size to scale.svg
World98.svg
Biliopancreatic_diversion.svg
Illu_conducting_passages_rus.svg
TasacoraTest-World98.svg
TasacoraTest-wheelManager-World98.svg
ISS configuration apr-2006 numbers.svg
Vertical_banded_gastroplasty.svg
Adjustable_gastric_banding.svg
Sleeve_gastrectomy.svg
Solar System size to scale de.svg
Hexagonal Ice Crystals.svg
Solar System size to scale ca.svg
Lymph_node_regions.svg
Lymph_node_regions-ru.svg
Complement pathway.svg
Flag of Poland (normative).svg
Flag of Croatia for discussion.svg
Obscure-female-symbols.svg
Operating systems used on top 500 supercomputers.svg
System-log-out.svg
P&WV map.svg
Cjsflowco.svg
sun-heat-planet-solar-system-space-581377.jpg
World Tantalum Production 2006.svg
Terms of Use   Search of the Day