20th-century volcanic events

active stratovolcano in the Gulf of Naples, Italy

volcano in Washington state

active volcano in Central Java and Yogyakarta, Indonesia

Mayon (; , ), also known as Mount Mayon and Mayon Volcano, is an active stratovolcano in the province of Albay in Bicol, Philippines. A popular tourist destination, it is renowned for its "perfect cone" owing to its symmetric conical shape, and is regarded as sacred in Philippine mythology.

Cotopaxi ( , , ) is an active stratovolcano in the Andes Mountains, located in Cotopaxi National Park in Cotopaxi Province, about south of Quito, and northeast of the city of Latacunga, Ecuador. It is the second highest summit in Ecuador (after Chimborazo), reaching a height of . Cotopaxi is among the highest active volcanoes in the world.

Surtsey ("Surtr's island" in Icelandic, ) is an uninhabited volcanic island located in the Vestmannaeyjar archipelago off the southern coast of Iceland. At Surtsey is the southernmost point of Iceland. It was formed in a volcanic eruption which began below sea level, and reached the surface on 14 November 1963. The eruption lasted until 5 June 1967, when the island reached its maximum size of . Since then, wave erosion has caused the island to steadily diminish in size: , its surface area was . The most recent survey (2007) shows the island's maximum elevation at above sea level.

Hekla (), or Hecla, is an active stratovolcano in the south of Iceland with a height of . Hekla is one of Iceland's most active volcanoes; over 20 eruptions have occurred in and around the volcano since the year 1210. During the Middle Ages, the Icelandic Norse called the volcano the "Gateway to Hell" and the idea spread over much of Europe.

Active volcano in Bali, Indonesia

Parícutin (or Volcán de Parícutin, also accented Paricutín) is a cinder cone volcano located in the Mexican state of Michoacán, near the city of Uruapan and about west of Mexico City. The volcano surged suddenly from the cornfield of local farmer Dionisio Pulido in 1943, attracting both popular and scientific attention.

active stratovolcano in central North Island, New Zealand

volcanic mountain in Colombia

active volcano in the Philippines

Sakurajima (, ) is an active stratovolcano, formerly an island and now a peninsula, in Kagoshima Prefecture in Kyushu, Japan. It is the most active volcano in Japan.

volcano in Iceland

Galeras (Urcunina among the 16th-century indigenous people) is an Andean stratovolcano in the Colombian department of Nariño, near the departmental capital Pasto. Its summit rises above sea level. It has erupted frequently since the Spanish conquest, with its first historical eruption being recorded on December 7, 1580. A 1993 eruption killed nine people, including six scientists who had descended into the volcano's crater to sample gases and take gravity measurements in an attempt to be able to predict future eruptions. It is currently the most active volcano in Colombia.

mountain

mountain in Nagasaki Prefecture, Japan

Shiveluch (), also called Sheveluch, which originates from the name "suelich" which means "smoking mountain" in Itelmen, is the northernmost active volcano in Kamchatka Krai, Russia. It and Karymsky are Kamchatka's largest, most active and most continuously erupting volcanoes, as well as one of the most active on the planet. Shiveluch erupts around of magma per year, which causes frequent and large hot avalanches and lava dome formations at the summit. Volcanic ash emissions from this volcano often disrupt air traffic connecting the Asian and North American continents.

Volcano on the island of Saint Vincent in the Caribbean

Novarupta is a volcano located on the Alaska Peninsula on a slope of Trident Volcano in Katmai National Park and Preserve, about southwest of Anchorage. Novarupta was formed in 1912, during the largest volcanic eruption of the 20th century, in which it released 30 times the volume of magma of the 1980 eruption of Mount St. Helens.

The Kelud (, sometimes spelled as Klut, Cloot, Kloet, Kloete, Keloed or Kelut) is a mountain stratovolcano located in Kediri, East Java, Indonesia. Like many Indonesian volcanoes and others on the Pacific Ring of Fire, Kelud is known for large explosive eruptions throughout its history. More than 30 eruptions have occurred since 1000 AD. In 2007, an effusive explosion filled the crater with a lava dome. It last erupted on 13 February 2014, destroying the lava dome and ejecting boulders, stones and ashes up to West Java about from Mount Kelud. The crater filled with water during the rainy seaso

Eldfell is a volcanic cone just over high on the Icelandic island of Heimaey in the Westman Islands. It formed in a volcanic eruption that began without warning on the eastern side of Heimaey on 23 January 1973. The name means Hill of Fire in Icelandic.

volcano on Montserrat in the Caribbean

active volcano in Guatemala

Mexican volcano

Bezymianny ( Bezymyannyyi, meaning unnamed) is an active stratovolcano in Kamchatka, Russia. Bezymianny volcano had been considered extinct until 1955. Activity started in 1955, culminating in a dramatic eruption on 30 March 1956. This eruption, similar to the 1980 eruption of Mount St. Helens, produced a large horseshoe-shaped crater that was formed by a sector collapse and an associated lateral blast. Subsequent episodic but ongoing lava dome growth, accompanied by intermittent explosive activity and pyroclastic flows, has largely filled the 1956 crater. The most recent eruption of lava flow

lava dome in the Cascade Range

steep-sided volcanic cone about 10 km in diameter at its base

Mount Galunggung (Indonesian: Gunung Galunggung, formerly spelled Galoen-gong, ) is an active stratovolcano in West Java, Indonesia, around southeast of the West Java provincial capital, Bandung (or around to the northwest of the West Java town of Tasikmalaya). Mount Galunggung is part of the Sunda Arc extending through Sumatra, Java and the Lesser Sunda Islands, which has resulted from the subduction of the Australian Plate beneath the Eurasian Plate.

mountain in Aysén Province, Chile

volcanic eruption

isolated and uninhabited Japanese island in the Pacific Ocean considered part of the Volcano Islands and administered as part of Tokyo's Ogasawara subdistrict

stratovolcano in Alaska

Harimkotan (; ; alternatively , ) is an uninhabited volcanic island located from Onekotan near the northern end of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean. Its name is derived from the Ainu language, from 'village of many Cardiocrinum.'

island in Tokyo, Japan

Puracé is an andesitic stratovolcano located in the Puracé National Natural Park in the Cauca Department, Colombia. It is part of the North Volcanic Zone of the Andean Volcanic Belt. The volcano is located at the intersection of the Coconucos and Morras Faults.

lake in West Province, Cameroon

mountain in Indonesia

mountain in Colombia

mountain in Curicó Province, Chile

, is one of the Satsunan Islands, usually classed with the Ōsumi Islands belonging to Kagoshima Prefecture, Japan. The island, in area, has a population of 147. The island can only be reached by boat as it has no airport. There is regular ferry service with Yakushima, which is about 15 km to the east. Travel time is approximately 1 hour. The islanders are dependent mainly on fishing, agriculture and seasonal tourism. The entire island is within the borders of the Kirishima-Yaku National Park.

island in Papua New Guinea

November 1985 volcanic eruption in Colombia

Ksudach () (also known as Vonyuchy Khrebet Volcano) is a stratovolcano in southern Kamchatka, Russia. The last eruption of Ksudach was in March 1907, on or around 28 March, which was one of the largest ever recorded in Kamchatka with a Volcanic Explosivity Index of 5. The summit area comprises overlapping calderas. Two lakes, Bolshoe and Kraternoe, are located within calderas at the summit of Ksudach. These lakes, along with hot springs and the surrounding wilderness, make the Ksudach Volcano region a popular trekking destination. In the event of renewed volcanic activity, its remote location

andesitic stratovolcano in the Oro Province of Papua New Guinea

volcano in Colombia and Ecuador

mountain

volcano in Indonesia

stratovolcano located within the Doña Juana-Cascabel Volcanic Complex National Natural Park

volcano in Alaska, United States

volcano in Colombia and Ecuador

1986 disaster in Cameroon due to a limnic eruption of Lake Nyos

thumb|Viewed from Mount Usu

volcanic eruption in the Philippines in 1991

1902 volcanic eruption of Mount Pelée that destroyed the town of Saint Pierre

Ryukyu Islands and Kyushu / Submarine / Eruption Observed

mountain in United States of America

Japanese island