A VRML scene of the Mars Ganges Chasma shows Viking surface images texture-mapped onto an elevation grid derived from Viking terrain data. High-resolution Mars Orbiter Camera images are embedded, and Mares Orbiter Laser Altimeter elevation tracks float above.

This facility serves as a means for Web-based exploration of data returned by Mars robotic missions, as well as a resource for mission landing site planners. Features include archives for high-resolution (3 meters/pixel) Mars Orbiter Camera (MOC) images from the current Mars Global Surveyor (MGS), and for Mars Orbiter Laser Altimeter (MOLA) elevation data from the MGS.

The MOC images archive displays MOC images georectified within larger-scale Viking images for regional context, and includes online Java-based image processing. The MOLA track archive allows users to view the MOLA elevation tracks over context images, and as elevation profiles which can be queried for coordinates and elevations.

In addition, a VRML 3-D atlas allows users to select regions of -interest that are then rendered as VRML scenes on-the-fly by a servlet. The VRML scenes use surface images and terrain data from the Viking orbiters, and can include MOC images and MOLA elevation profiles as well.