Introducing Google Mars.



What you're looking at is a color elevation map of Mars, where blue and green are the lowest elevations and red, pink, and white are the highest. The most notable features in this image include Olympus Mons (the really big circle off by itself in the top left corner), three other volcanoes- Ascraeus Mons (top), Pavonis Mons (middle) and Arsia Mons (bottom), and finally Valles Marineris is that blue line thing. For scale, Valles Marineris is about the width of the lower 48 United States (from left to right).