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Valles Marineris Navigator is an app for iPad that uses data from the Nasa's Mars Orbiter Laser Altimeter (MOLA) instrument to create a navigable 3D terrain model of the Valles Marineris canyons with the terrain color giving a visual indication of the MOLA altitude values.

This app uses the 128 pixels per degree MOLA data, about 0.463 kilometers per pixel, and it covers an area of about 4200 kilometers from West to East, and 1200 kilometers from North to South that you can explore by moving around.

Details about navigation and screen data are available by touching the help button at the top right corner of the screen.

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