Diario del viaje al rio Bermejo

Through the eyes of a modest Franciscan friar, this diary records a daring 92‑day venture up the Bermejo River in the late 1700s. The narrative weaves meticulous depth soundings, distance tables, and descriptions of the river’s shifting channels with vivid portraits of the Mataguayo, Mataco, and other peoples living along its banks. Along the way the friar confronts swarms of hostile tribes, negotiates the narrow passages of the Guaycurú lands, and reflects on the uneasy relationship between the Spanish crown’s grand plans and his own humble canoe.

The manuscript also reveals a quiet rivalry with fellow explorers, contrasting his measurements with those of Colonel Cornejo and later travelers. Listeners will hear the rhythm of daily entries—weather notes, river depths, and the occasional philosophical musing on colonial ambition—creating a palpable sense of frontier life. The account offers both a scientific snapshot of an uncharted waterway and a human story of perseverance in an unfamiliar world.