One of the world's largest active volcanoes, with a caldera measuring approximately 25 km across. Located on Kyushu island, it features multiple peaks and is popular with hikers — though its active nature demands constant monitoring.
One of the most active volcanoes in North America with over 30 periods of eruptions since 1585. The Colima volcanic complex dominates the western Mexican Volcanic Belt and remains closely monitored by scientists.
Europe's tallest active volcano with one of the world's longest documented eruption records dating to 1500 BCE. Etna dominates Catania and is characterised by both continuous summit activity and occasional high-rate flank eruptions.
One of Central America's most active volcanoes, looming over Guatemala's former capital Antigua. Fuego is feared for its vigorous eruptions producing major ashfalls, pyroclastic flows and lava flows recorded continuously since 1524.
A stratovolcano in the central Aleutian Islands that has been erupting continuously since July 2021 — one of the longest ongoing eruptions in recent Alaskan history. Lava has filled most of the summit crater and advanced into surrounding valleys, with no explosive activity since May 2021.
The Krýsuvík–Trölladyngja volcanic system on the Reykjanes Peninsula has been the site of repeated eruptions in recent years. Activity has reshaped the landscape around Grindavík and Svartsengi, with the most recent eruption concluding in August 2025.
One of the world's most active volcanoes, Kīlauea has been erupting episodically from two vents in Halemaʻumaʻu crater since December 23, 2024. Episode 43 produced fountains up to 1,300 ft (400 m) on March 10, 2026, sending tephra into surrounding communities.
Indonesia's most active volcano and one of the most dangerous — feared for its deadly pyroclastic flows generated when lava domes collapse. Erupts on average every 5–10 years and is under constant scientific surveillance. Name means "the one making fire."
One of the world's most active volcanoes, Piton de la Fournaise has been erupting continuously since 13 February 2026 from the SE flank of Dolomieu Crater. Lava reached the ocean on 16 March, extending Réunion's coastline by up to 840 m.
Costa Rica's "smoking mountain" hosts one of the world's most acidic crater lakes — a striking turquoise pool whose pH rivals battery acid. Frequent phreatic eruptions driven by superheated groundwater keep scientists and visitors on constant alert.
North America's second highest volcano, rising 70 km southeast of Mexico City. Its Aztec name means "smoking mountain" — an apt description for a glacier-clad giant with a history of major Plinian eruptions stretching back to pre-Columbian times.
New Zealand's most active volcano is a complex stratovolcano whose summit crater lake is a persistent hazard. Lahars from phreatic eruptions threaten nearby ski areas and river valleys. Low-level seismic unrest continues following the October 2022 eruption.
One of the world's most persistently active volcanoes, producing strong Strombolian to large ash explosions every 4–24 hours. Located just 8 km from the city of Kagoshima and half a million people, it is closely watched and frequently deposits ash on the city.
Also known as Chaparrastique, San Miguel's symmetrical cone is one of El Salvador's most recognisable landmarks and most active volcanoes. Flank eruptions have produced lava flows reaching the north, northeast and southeast since the 17th century.
Java's highest and one of its most active volcanoes — also known as Mahameru (Great Mountain). Its ongoing activity since 1967 is characterised by frequent small-to-moderate summit explosions, occasional lava flows and pyroclastic events reaching the lower flanks.
The "Lighthouse of the Mediterranean" — Stromboli has been erupting almost continuously for at least 2,000 years. Famous for its regular small explosions throwing glowing lava from summit craters, lending its name to the Strombolian eruption style worldwide.
One of the Philippines' most active and dangerous volcanoes — a beautiful caldera filled with a lake, within which sits a volcanic island with its own crater lake. At least six eruptions since 1572 have claimed lives via pyroclastic flows and tsunamis across the crater lake.
Spain's highest peak and one of the world's largest volcanoes by volume. Teide experienced a sustained earthquake swarm beneath the Las Cañadas caldera in February 2026, consistent with deep hydrothermal adjustment. No eruptive activity has occurred since 1909.
Three volcanic cycles spanning two million years produced some of the greatest eruptions in planetary history. The current 45 × 85 km caldera formed 640,000 years ago. Today Yellowstone's vast hydrothermal system — geysers, hot springs and fumaroles — remains intensely active.