Ever since Edgar Rice Burroughs created John Carter of Mars and Tarzan of the Apes over 100 years ago, his millions of readers have yearned for a novel in which these classic heroes meet. Now, in an epic adventure authorized by Edgar Rice Burroughs, Inc., the Warlord of Barsoom and the Lord of the Jungle come face-to-face in what must be described as their more most challenging exploit yet. When Tarzan finds himself marooned on dying Mars, without friends or weapons, he undertakes a trek across the dead sea bottoms of the Red Planet in search of food and shelter. What happens when the ape-man falls in with a tribe of four-armed Martian gorillas beside which the bronzed giant is no more than small boy? Will Tarzan sink into abject slavery or rise to ape-lord? By the author of Tarzan: Return to Pal-ul-don and King Kong vs. Tarzan.