In the middle of karst country—a region of limestone deposits that is peppered with fissures, caves, and underground streams—the Río Abajo State Forest spans some 5,000 acres and includes huge bamboo stands and silk-cotton trees. Walking trails wind through the forest, which is one of the habitats of the rare Puerto Rican parrot. An information office is near the entrance, and a recreation area with picnic tables is farther down the road.
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