p 　　The dream of sending humans to Mars is closer than ever before In fact, many scientists think that the first person to set foot on the Red Planet is alive today But where should the first explorers visit when they get there br 　　Horizon has gathered the world 三九 s leading experts on Mars and asked them: where would they go, if they got the chance - and what would they need to survive br 　　Using incredible real images and data, Horizon brings these Martian landmarks to life, from vast plains to towering volcanoes and from deep valleys to hidden underground caverns The programme will also show viewers where to land, where to live… and even where to hunt for traces of extra-terrestrial life br 　　This is the ultimate traveller 三九 s guide to Mars p