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 ...

A stunning composite image, made up of three years' worth of satellite photos, shows the ancient lava of Libya's Haruj ...

Everest might be the tallest mountain on Earth ... 12 large volcanoes that are up to 100 times larger than any volcanoes on Earth. Like the volcanoes that formed the Hawaiian islands, Olympus ...

Researchers found that the red planet's Tharsis volcanoes - the tallest in the solar system ... and mountaintop - unlike what we see on Earth, where you might expect to see frosty peaks.

Bárðarbunga volcano in the north of Iceland could be waking up after an earthquake "swarm" was reported this week.

Mount Everest is indeed the world's highest mountain, with its peak standing at 8,849m (that's 8.8km) above the ocean.

Mauna Kea is actually an inactive volcano on the big island of Hawaii ... then you'll have technically scaled the tallest mountain on Earth. You just majorly cheated by starting more than half ...