NASA's Mars Global Surveyor shows the Tharsis volcanoes (mostly covered by bluish-white water ice clouds) and the Valles Marineris trough system on Mars in April 1999.

This image is extracted from the global view shown in Slide #1. It features the Tharsis volcanoes (mostly covered by bluish-white water ice clouds) and the Valles Marineris trough system (to the right). This is a mosaic of global color images obtained on a single martian day in April 1999.

View all Images