The true global geography of Mars first emerged with comprehensive maps from Mariner 9 and Viking during the 1970s. This visualization tours the Red Planet using the Viking dataset, hitting such features as the Valles Marineris canyons and the Olympus Mons volcano. Full description.

This interactive activity lets you search for features on and around the Olympus Mons volcano on Mars (the largest in the solar system. You look at a large image of the volcano and small images of various features, such as lava channels, the caldera, and a lava flow. You are asked to identify where each part is on the large image. The informative feedback makes the activity educational as well as ... Full description.

This image of Mars includes a brief description and a zoom-in feature to view the image at closer range. The center of the scene shows the entire Valles Marineris canyon system. An audio option allows one to listen to the caption. A glossary is also provided. Full description.

This NASA (National Aeronautics and Space Administration) planet profile provides data and images of the planet Mars. These data include planet size, orbit facts, distance from the Sun, rotation and revolution times, temperature, atmospheric composition, density, surface materials and albedo. Images with descriptions include surface features such as canyons, volcanoes, Viking 1 and 2 landing sites, ... Full description.

This poster of Mars shows a full-disk mosaic, taken by the Mars Global Surveyor. The northern polar ice cap, Tharsis volcanoes, and Valles Marineris are visible. The accompanying text provides a brief description, history, and geology, as well as some statistical facts and significant dates in Mars exploration. Full description.

This interactive activity lets you superimpose familiar objects onto images of volcanoes on Mars (including Olympus Mons, the largest volcano in the solar system), so you can see just how large they are. The dropped objects include a school bus, stadium, Texas, Hawaii, and the contiguous US. Informative feedback makes the activity educational as well as fun. Full description.

This site provides information on volcanoes on Mars, including shield volcanoes, large volcanic cones, unusual patera structures, mare-like volcanic plains, and a number of other smaller features. It also compares volcanism on Mars and the Earth's Moon. Full description.

This interactive activity lets you search for features on Mars and Earth, including polar ice caps, large impact craters and canyons, and the highest volcano. Full description.

This resource is part of a collection that compares the geology and weather of Earth and Mars. This particular page contrasts Hawaiian volcanoes with Mars volcanoes. A beginner version is also available. Full description.

This interactive activity lets you superimpose familiar objects onto images of various features on Mars so you can see just how large they are. The features include crater landing sites, the largest volcano in the solar system, and a headwater area, etc. The objects include a school bus, stadium, Texas, Hawaii, and the contiguous USA. The activity is fun and educational. Full description.