Igneous & Impact Craters -- Detail

Volcanoes on Mars tend to be larger than their terrestrial counterparts. Elysium Mons (left) is on the Elysium Bulge southwest of Olympus Mons. This shield volcano rises 9 km above the surrounding plains and the summit caldera is ~15 km in diameter. Emi Koussi is one of several volcanoes on the Tibesti Massif in Chad, Emi Koussi is a Holocene stratovolcano ~101 km wide and 2.3 km high. The summit caldera is 19 km wide.

Previous slide

Next slide

Back to first slide

View graphic version

	Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." () . Send questions or comments to the NASA Responsible Official at jsc-earthweb@mail.nasa.gov Curator: Earth Sciences Web Team Notices: Web Accessibility and Policy Notices, NASA Web Privacy Policy Last Update: