The United States leads the world with 165 Holocene volcanoes, mostly in Alaska, Hawaii, and the Pacific Northwest. Active ...

A spacecraft's-eye view over the landscapes of Mars has just given us a first-of-its-kind glimpse of the giant, ancient edifice known as Arsia Mons.

Learn about the largest active volcano on Earth Mauna Loa in Hawaii. Discover its massive size, eruption history, and ...

Kīlauea Volcano’s Halemaʻumaʻu crater began erupting again on Wednesday, with lava fountains reaching more than 1,000 feet in ...

NASA’s Mars Odyssey captured a stunning sunrise view of Arsia Mons, revealing water-ice clouds and offering insights into ...

Mount Etna produced a spectacularly explosive eruption Monday, sending a ripple of reddish clouds down from the southeast summit of Europe's highest active volcano.

When Hawaii’s expansive Mauna Loa volcano erupted in 1935 ... Etna is a tall volcano with high slope angles. The shield volcanoes of Hawaii have far gentler slopes, making the use of explosives ...

After the episodic lava fountaining phase of Maunaulu ended, it entered a multi-year phase of lava flows building a shield ... Rift Zone. Mauna Loa is not erupting. Its USGS Volcano Alert Level ...

Mauna Loa has an estimated volume of 18,000 cubic miles (75,000 cubic kilometers). The biggest shield volcano is Tamu Massif, and it sits on a seamount east of Japan, its summit 6,500 feet (1,980 ...

The Axial Seamount is a shield volcano, similar to Mauna Loa in Hawaii, the world's most active volcano. Shield volcanoes typically produce runny lava flows that result in gentle slopes ...