This page is the start of the tour which explores water on Mars. Use the navigation button at the top of the page to move through the tour. To go to the next page, just press the forward link on the navigation button.
Evidence for running water, including river channels such as those shown here, can be seen on the surface of Mars, although there is no running water present today. These features suggest that there was water present near the surface at some time in the Martian past.