Island of Marvels

S1, E1: Discover Madagascar's most bizarre and dramatic places, and the unique wildlife that has made its home in each, thanks to the geology and isolation of this Alice-in-Wonderland world. Crowned lemurs scamper around Madagascar's weirdest landscape, the razor-sharp limestone tsingy, which looks like something from another planet. While, in the southern 'spiny desert', a spider hauls an empty snail shell, 30 times its own weight, up into a bush as a shelter; something never before filmed, and possibly never observed in the wild before.