This sequence of graphics illustrates how canyons on Mars were formed, looking at interior geologic processes. Full description.

This interactive activity lets you superimpose familiar objects onto images of some of the canyons on Mars so you can get an idea of just how big they are. The objects include a school bus, stadium, Texas, Hawaii, and the contiguous US. Informative feedback makes the activity educational as well as fun. Full description.

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 resource is part of a collection that compares the geology and weather of Earth and Mars. This particular page contrasts Earth's Grand Canyon with Valles Marineris on Mars. A beginner version is also available. Full description.

This interactive activity presents a large image of a canyon on Mars and smaller images of various features contained within it. You try to locate each feature in the large image by clicking on it. Informative feedback makes the activity educational as well as fun. 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 resource provides a general description of this system of canyons located just south of the Martian equator. Included are various images of the terrain: some photographic, some constructed from remotely sensed datasets. One set of images is presented in stereo and must be viewed with 3D glasses. Full description.

Students will learn that Mars, and each planet in the solar system, is unique due to the materials from which it is made and the processes that shaped it. Images and information from Mars exploration voyages, including the Viking Mission in 1975, the Pathfinder Landing in 1997, the Mars Global Surveyor project, the Mars Odyssey and Mars Express spacecrafts, the Mars Exploration Rovers, and the Reconnaissance ... 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 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.