Diego de Ordaz References Diego de Ordaz Spanish explorer Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Orinoco River/ History of explorationIn 1531 the Spanish explorer Diego de Ordaz voyaged up the river, and that same year another Spanish explorer, Antonio de Berrio, descended the Casanare and Meta rivers and then descended the Orinoco to its mouth. Read MoreIn 1531 the Spanish explorer Diego de Ordaz voyaged up the river, and that same year another Spanish explorer, Antonio de Berrio, descended the Casanare and Meta rivers and then descended the Orinoco to its mouth. Read More