A traveler's account recounts his capture and more than three years of enforced servitude among several indigenous groups in southern South America, describing daily hardships, survival strategies, and the circumstances of his release. He records language, social organization, customs, and material culture of the Patagons, Puelches, Pampas, and Mamuelches from close observation, and traces routes on a map. The narrative mixes personal suffering and ethnographic notes, aiming to correct local names and offer practical lessons for future travelers.