For expedition climber Mark Synnott, the intrigue of the exploration is the ultimate thrill. The veteran climber has completed big wall missions to Pakistan, Baffin Island and the Himalayas. Now inspired by the solitary image of an arch-like tower he first saw some ten years earlier Synnott leads two of the worlds most exciting young climbers deep into the dead heart of Africa, on a mission to climb the mythical towers of the Ennedi.