ThedreamofsendinghumanstoMarsiscloserthaneverbefore.Infact,manyscientiststhinkthatthefirstpersontosetfootontheRedPlanetisalivetoday.Butwhereshouldthefirstexplorersvisitwhentheygettherebbb　　Horizonhasgatheredtheworld'sleadingexpertsonMarsandaskedthem:wherewouldtheygo,iftheygotthechance-andwhatwouldtheyneedtosurvive?　　Usingincrediblerealimagesanddata,HorizonbringstheseMartianlandmarkstolife,fromvastplainstotoweringvolcanoesandfromdeepvalleystohiddenundergroundcaverns.Theprogrammewillalsoshowviewerswheretoland,wheretolive…andevenwheretohuntfortracesofextra-terrestriallife.　　Thisistheultimatetraveller'sguidetoMars.