Acheron Fossae is filled with dramatic landscape features — most notably, its namesake fossae, or fault-like channels that ...

Watch as a baby pygmy hippo becomes sassy and refuses to cooperate with zookeepers in an adorable video. Footage shared by ...

The tallest active volcanoes in the world that are rumbling but very much open for visitors—if you don’t mind a bit of heat with your hike.

A dazzling image taken by NASA’s 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking through clouds at dawn on the Red Planet. Arsia Mons, which dwarfs Earth’s ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.

The 5,197-foot mountain is a twin volcano with Mount Lewotobi Perempuan in the district of Flores Timur. Indonesia is an archipelago of 270 million people with frequent seismic activity.

The NASA Odyssey orbiter, which launched in 2001 from Cape Canaveral, snapped a 1st-ever image of a Mars volcano peeking above the clouds before dawn.

Mars orbiter that launched from Florida captures 1st-ever pic of volcano above clouds Known as Arsia Mons, the volcano on Mars dwarfs Earth’s tallest volcano, Mauna Loa in Hawaii.

Mount Lewotobi Laki Laki volcano in south-central Indonesia erupted, spewing towering columns of hot ash into the air. Authorities raised the eruption alert to the highest level and expanded the ...