Tio Reinaldo Alverio guides us through the isolated foot trails of Puerto Rico's mountains and into the Taino Indian region of San Lorenzo tracing the path of Ruta Indigena along its Río Cayrabón which later become known as la Gran Rio de Loiza, after Cacika Loíza or “Yuisa” in a territory known as “Jaymanio” in the Cayrabón’s channel. This river is born at the top of the mountains at “La Sierra de Cayey” at 3,500 ft over sea level. It passes through the municipalities of San Lorenzo, Caguas, Gurabo, Trujillo Alto, Carolina, Canóvanas and Loíza. It is forty miles long until it reaches the Atlantic Ocean.
