High Quality Content by WIKIPEDIA articles! The Río Prieto (Yabucoa, Puerto Rico) is a river of Puerto Rico. Puerto Rico (Spanish for "rich port") is composed of an archipelago that includes the main island of Puerto Rico and a number of smaller islands, the largest of which are Vieques, Culebra, and Mona. The main island of Puerto Rico is the smallest by land area and second smallest by population among the four Greater Antilles, which also include Cuba, Hispaniola, and Jamaica. Puerto Ricans often call the island Borinquen, from Borikén, its indigenous Taíno name. The terms boricua and borincano derive from Borikén and Borinquen respectively, and are commonly used to identify someone of Puerto Rican heritage. The island is also popularly known in Spanish as "La Isla del Encanto" which means "The Island of Enchantment" in English.