 It derives its name from the plains or savannas found in the northern beaches of Mayagüez, in front of the Mona Channel, and in the vicinity of the mouth of the river now called the Río Grande de Añasco.It is one of two barrios in Mayagüez whose jurisdiction extends form the main island, because its jurisdiction includes the hilly island of Desecheo, whose name is a Taino name which means "hilly land".