These amazing images show huge sand dunes carved into crescents, rocky slopes cascading with landslides, parched riverbeds and frosty polar landscapes. You could be forgiven for thinking they are picturesque photos from remote regions on Earth. But you would be wrong. They are in fact high-resolution camera images from Mars, and they reveal just how similar, yet alien, the red planet is to our Earth. Our planet is sculpted by wind and water in all its various forms; Mars is sculpted by wind, sand and dust. The processes that shaped it may be different, but Mars has its own peculiar beauty, its own forms and patterns.