El Castellar of Librilla Nature · Librilla, Bajo Guadalentín, Murcia Image of Librilla, not of the place itself. A hill in Librilla where archaeological remains of an Iberian settlement have been found, which today functions as a viewpoint over the Guadalentín valley and the town centre of the municipality. From this natural viewpoint the Algeciras reservoir can also be seen, in the surroundings close to the town. Photo: Sapoproductions (CC BY-SA 3.0) What to see and do in Librilla