Río Abajo State Forest (Bosque Estatal de Río Abajo) is reached via Rte. 10 to Rte. 621. Teak and mahogany trees cover the oddly shaped karst hills of the 5,730-acre (2,319-hectare) forest, which contains a recreation area and offers exploring possibilities in dozens of mountain caves and ruined sugar mills.
Recreational activities are permitted. Camping is permitted. Picnicking is permitted.