Olympus Mons, a shield volcano on Mars, is the largest volcano in the solar system, measuring approximately 370 miles in diameter and 26 kilometers in height. The formation of Olympus Mons and three ...

Smoke billows from the mouth of Mt. Shasta like a thunderous cough. Within moments, clear skies turn gray, and the sun vanishes behind thick, shifting layers of volcanic gas and ash. Visitors snap ...

Scientists believe a massive underwater volcano is on the brink of eruption. The colossal Axial Seamount, situated approximately 300 miles off the coast of Oregon in the US, is over a mile long, ...