Scientists have discovered two mountains which reach heights of around 620 miles (1,000km), dwarfing anything else found on the planet. Daily Mail Story by Wiliam Hunter ...

One idea is that the mountains are parts of the lower mantle that have been superheated due to their proximity with Earth's incandescent core. While the mantle can reach 3,700C (6,692F), this is ...

Earth's crust once formed a dense "root" supporting Colombia's northern Sierra Nevada de Santa Marta mountains, but new research suggests this prop sank into the mantle millions of years ago.

A team of geologists propose a new explanation in an article in the journal Earth and Planetary Science Letters. “The ice conceals some of Earth’s most enigmatic features,” according to the paper. One ...

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

These majestic landscapes have always been dangerous, but as the world warms, mountains are becoming much more unpredictable — and the world is unprepared.

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 the ...

The deep Earth contains vast mountain ranges with peaks up to four times the height of Everest. But no one knows why. It was a glaring summer's day in Antarctica. Through frozen eyelashes ...