Stratovolcano · 2,857 m · Last eruption: 2023
Shishaldin Volcano, or Mount Shishaldin, is one of six active volcanoes on Unimak Island in the eastern Aleutian Islands of Alaska. It is the highest mountain peak of the Aleutian Islands, rising to a height of 9,373 ft (2,857 m) above sea level. It is located within Alaska Maritime National Wildlife Refuge. Shishaldin's magma supply is generated via flux melting above the Aleutian Trench, where the Pacific Plate subducts beneath the North American Plate. Due to its remote location and frequently inclement weather, the Alaska Volcano Observatory (AVO) monitors the volcano remotely via satellite and a seismic network deployed in 1997. Shishaldin is one of the most active volcanoes in the Aleutian Islands, with 40 confirmed eruptions in the last 11,700 years. Notably, Shishaldin produced a sub-Plinian eruption in 1999.
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Stratovolcano · -55 m · Last eruption: 2026
Ahyi Seamount is an active shallow submarine volcano in the Northern Mariana Islands, in the Northwestern Pacific Ocean. It has erupted 5 times since the year 2000: in 2001, 2014, 2022–23, and twice in 2024. Since 2009, it has been a part of Marianas Trench Marine National Monument of the United States.
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Shield volcano · 1,222 m · Last eruption: 2026
Kīlauea Iki is a volcanic crater next to the main summit caldera of Kīlauea on the island of Hawaiʻi in the Hawaiian Islands. Shaped like a pit, the crater existed prior to its most recent eruption, which occurred from 14 November to 19 December 1959. This eruption was notable for several unique phenomena, including the formation of a large lava lake, lava rapids, waves, a lava whirlpool, and a lava fountain whose height set a record in Hawaii. Observers also recorded a two-way circulation of lava between the magma chamber and the surface. Today, Kīlauea Iki is a popular hiking destination within Hawaii Volcanoes National Park.
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Stratovolcano · 5,005 m · Last eruption: 847
Mount Churchill is a dormant volcano in the Saint Elias Mountains and the Wrangell Volcanic Field (WVF) of eastern Alaska. Churchill and its neighbor Mount Bona are both ice-covered volcanoes with Churchill having a 2.7-by-4.2-kilometre-wide caldera just east of its summit. There are sparse outcrops of lava flows and tephra, mostly dacite.
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Stratovolcano · 4,392 m · Last eruption: 1450
Mount Rainier, also known as Tahoma, is a large, active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about 59 miles (95 km) south-southeast of Seattle. At 14,406 ft (4,391 m) it is the highest mountain in the U.S. state of Washington, the most topographically prominent mountain in the contiguous United States, and the tallest in the Cascade Volcanic Arc.
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Stratovolcano · 4,317 m · Last eruption: 1250
Mount Shasta is a potentially active stratovolcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of 14,179 ft (4,322 m), it is the second-highest peak in the Cascades and the fifth-highest in the state. Mount Shasta has an estimated volume of 85 cubic miles, which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc.
The mountain and surrounding area are part of the Shasta–Trinity National Forest.
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