September 16, 2014
From The Eruptions of Iceland’s Bardarbunga Volcano, one of 14 photos. An aerial picture taken on September 14, 2014 shows a small plane flying over the Bardarbunga volcano as it spews lava in southeast Iceland. The Bardarbunga volcano system has been rocked by hundreds of tremors daily since mid-August, prompting fears the volcano could explode. Bardarbunga, at 2,000 meters (6,500 feet), is Iceland’s second-highest peak and is located under Europe’s largest glacier, Vatnajoekull. (Bernard Meric/AFP/Getty Images)

From The Eruptions of Iceland’s Bardarbunga Volcano, one of 14 photos. An aerial picture taken on September 14, 2014 shows a small plane flying over the Bardarbunga volcano as it spews lava in southeast Iceland. The Bardarbunga volcano system has been rocked by hundreds of tremors daily since mid-August, prompting fears the volcano could explode. Bardarbunga, at 2,000 meters (6,500 feet), is Iceland’s second-highest peak and is located under Europe’s largest glacier, Vatnajoekull. (Bernard Meric/AFP/Getty Images)

February 14, 2014
From Kelud and Sinabung: Indonesia’s Two Erupting Volcanoes, one of 24 photos. On January 20, 2014, Mount Sinabung spews lava and gas during an eruption viewed from Jeraya, North Sumatra, Indonesia. The volcano has been erupting since September, forcing more than 20,000 people who live around it slopes to flee their homes to several temporary shelters. Earlier today, February 14, 2014, another volcano roared to life in Indonesia: Mount Kelud, spewing ash across most of Java. (AP Photo/Binsar Bakkara)

From Kelud and Sinabung: Indonesia’s Two Erupting Volcanoes, one of 24 photos. On January 20, 2014, Mount Sinabung spews lava and gas during an eruption viewed from Jeraya, North Sumatra, Indonesia. The volcano has been erupting since September, forcing more than 20,000 people who live around it slopes to flee their homes to several temporary shelters. Earlier today, February 14, 2014, another volcano roared to life in Indonesia: Mount Kelud, spewing ash across most of Java. (AP Photo/Binsar Bakkara)

January 10, 2014
From The Continued Eruptions of Mount Sinabung, one of 30 photos. Mount Sinabung spews volcanic ash and lava near Karo, North Sumatra on January 9, 2014. An Indonesian volcano that has erupted relentlessly for months shot volcanic ash into the air 30 times on January 4, forcing further evacuations with more than 20,000 people now displaced, an official said. (ATAR/AFP/Getty Images)

From The Continued Eruptions of Mount Sinabung, one of 30 photos. Mount Sinabung spews volcanic ash and lava near Karo, North Sumatra on January 9, 2014. An Indonesian volcano that has erupted relentlessly for months shot volcanic ash into the air 30 times on January 4, forcing further evacuations with more than 20,000 people now displaced, an official said. (ATAR/AFP/Getty Images)

December 13, 2013
From 2013: The Year in Volcanic Activity, one of 36 photos. Mt. Etna, Europe’s most active volcano, spews lava during an eruption as seen from Acireale, near the Sicilian town of Catania, Italy, on November 16, 2013. (AP Photo/Carmelo Imbesi)

From 2013: The Year in Volcanic Activity, one of 36 photos. Mt. Etna, Europe’s most active volcano, spews lava during an eruption as seen from Acireale, near the Sicilian town of Catania, Italy, on November 16, 2013. (AP Photo/Carmelo Imbesi)

November 18, 2013
From The Eruptions of Mount Sinabung, one of 19 photos. A woman looks on as Mount Sinabung spews ash, viewed from Sibintun village in Karo district, Indonesia’s north Sumatra province, on November 18, 2013. Mount Sinabung continued to spew volcanic ash throwing a plume 8,000 meters into the atmosphere on Monday as thousands of residents remained in temporary shelters fearful of more eruptions. (Reuters/Roni Bintang)

From The Eruptions of Mount Sinabung, one of 19 photos. A woman looks on as Mount Sinabung spews ash, viewed from Sibintun village in Karo district, Indonesia’s north Sumatra province, on November 18, 2013. Mount Sinabung continued to spew volcanic ash throwing a plume 8,000 meters into the atmosphere on Monday as thousands of residents remained in temporary shelters fearful of more eruptions. (Reuters/Roni Bintang)

May 3, 2013
From Soufriere Hills Volcano, one of 31 photos. A view of the Caribbean island of Montserrat, with the Soufriere Hills volcano erupting, viewed from orbit aboard the International Space Station on October 11, 2009. The volcano has been active off and on for thousands of years. The most recent period of activity began in 1995, and continues to this day. (NASA)

From Soufriere Hills Volcano, one of 31 photos. A view of the Caribbean island of Montserrat, with the Soufriere Hills volcano erupting, viewed from orbit aboard the International Space Station on October 11, 2009. The volcano has been active off and on for thousands of years. The most recent period of activity began in 1995, and continues to this day. (NASA)

December 14, 2012
From 2012: The Year in Volcanic Activity, one of 39 photos. On March 11, 2012, photographer Andrew Hall captured this fantastic image of Santiaguito, an active lava dome on Guatemala’s Santa María Volcano. Hall: “In the middle of the night, restless in my tent after hiking to the top of Volcan Santa Maria with Quetzaltrekkers, I trudged over to the other side of the summit, wrapped myself in my sleeping bag to fight off the chill at 12,000 feet, and watched alone as Volcan Santiaguito erupted again and again over the hours leading up to sunrise. The town of Retalhuleu, just beginning to awake, lies roughly 15 mi beyond.” (© Andrew Hall)

From 2012: The Year in Volcanic Activity, one of 39 photos. On March 11, 2012, photographer Andrew Hall captured this fantastic image of Santiaguito, an active lava dome on Guatemala’s Santa María Volcano. Hall: “In the middle of the night, restless in my tent after hiking to the top of Volcan Santa Maria with Quetzaltrekkers, I trudged over to the other side of the summit, wrapped myself in my sleeping bag to fight off the chill at 12,000 feet, and watched alone as Volcan Santiaguito erupted again and again over the hours leading up to sunrise. The town of Retalhuleu, just beginning to awake, lies roughly 15 mi beyond.” (© Andrew Hall)