The Hayli Gubbi shield volcano, thought to be dormant since almost the last ice age, has erupted, and the volcanic plume is reaching heights at which intercontinental aircraft fly. Hayli Gubbi is ...

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 ...

Scientists noted the eruption stayed mostly contained within the volcano's usual zone, but the long flow of the eruption, ...