We hope you enjoy these dramatic images of day and night eruptions, steam vents and lava flows of Costa Rica's most famous active volcano. Arenal Volcano towers over the tropical countryside at the edge of Lake Arenal and regularly demonstrates the power of nature with its eruptions of ash and red-hot molten rock.

Click on these thumbnails of Costa Rica's Arenal Volcano to view full-size images.
Arenal Volcano night eruption under the clouds in Costa RicaMassive nighttime eruption of Arenal Volcano, under the clouds in Costa RicaArenal Volcano nighttime eruption under the clouds in Costa Rica
Three shot sequence of an eruption
Steam escapes the summit of Arenal Volcano, Costa Rica
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Towering ash plume over Arenal Volcano, Costa Rica
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Arenal Volcano erupts through the clouds
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Arenal Volcano erupts on a clear night in Costa Rica
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Close-up view of steam vent on the skirt of Arenal Volcano, Costa Rica
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Brave explorers climb loose lava on Arenal Volcano
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Arenal Volcano provides natural saunas amid its porous lava rock
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Time exposed night shot of Arenal Volcano erupting, with streaking stars
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Night time exposure of glowing lava flow on the north side of Arenal Volcano, Costa Rica
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Massive steam vent on a newer lava flow on Arenal Volcano, Costa Rica
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Looking up an old lava flow on Arenal Volcano, Costa Rica
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Many vents emit steam in this view from northwest
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View of Arenal Volcano from pasture near La Fortuna, Costa Rica
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Looking down toward Arenal Lake from a major steam vent
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Looking up a washout next to an old lava flow
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Arenal Lake from up the side of Arenal Volcano
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Arenal Volcano displays a small eruption of ash and molten rock
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Molten rock into the air on the peak of Arenal Volcano, Costa Rica
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Arenal Volcano, Costa Rica, viewed from northeast
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New lava flow on Arenal Volcano, viewed from Tabacon Resort, Costa Rica, May 5, 1998
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ARENAL Volcano viewed from Tabacon Resort after the  May 5, 1998 eruption
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ARENAL Volcano seen from the lake side, after May 5, 1998 eruption
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