"Sinfín" begins in small town in the Patagonian jungle, a remote place stopped in time where disease, old age and death still exist. There begins a woman's search that will reveal they real history of the place: the silenced human sacrifices, the hidden interests, and the circumstances which propitiated the most surprising leap of human endeavor in a world that, meanwhile, descend into religious wars and unending migrations. "Sinfín" is not a novel lacking fiction but rather a fiction lacking a novel. It is the faithful account about something that has not yet happened; a fascinating and revealing story told in the manner of the best chronicles, thought out in the manner of the best essays, which offers the least known fact, the most daring hypotheses, the definitive analyses about that stroke of genius that will change the world.