A dazzling image taken by NASA's 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking ...

Arsia Mons, which dwarfs Earth’s tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice clouds, especially in the early morning. The image released Friday marks ...

You can explore Europe's tallest and most active volcano on an adventurous hike with stunning views, but it's not without ...

Mauna Loa is significantly shorter than the tallest volcanoes on Earth by height from sea level. But in terms of volume, Mauna Loa and fellow Hawaiian volcano Mauna Kea, which both have immense ...

One of Mars' tallest volcanoes peeps over a thick layer of clouds, in Odyssey’s first picture of Arsia Mons peering over the ...

Mauna Kea, located on Hawaii’s Big Island, is a dormant volcano recognized as the tallest mountain on Earth when measured from its base on the ocean floor to its peak, which rises 4,207 meters ...

This giant volcano is not only huge ... is more than two and a half times taller than Mount Everest, the highest mountain on Earth. If you could place Everest at the bottom of Olympus Mons ...

Tourists are running for their lives as Mount Etna, the tallest active volcano in Europe, erupts. But when has this happened before?

Continued activity may affect low-flying aircraft. The Klyuchevskoy Volcano (Klyuchevskaya Sopka) is the tallest active volcano in Eurasia. It is cone-shaped with a summit crater about 700 m wide.