La Cueva del Guayacán Ecological Park

Tucked away in Las Matas de Farfán, La Cueva del Guayacán Ecological Park is a hidden gem for nature lovers and culture buffs alike. Think dramatic limestone karst formations, trails winding through rare dry forest, and actual Taíno petroglyphs inside the cave—no glass cases, just the real deal. Local guides (born and raised here) break down the geology and ancestral history in a way no guidebook can. It’s raw, authentic ecotourism in the heart of San Juan province, miles from the resort crowds. Pack sturdy closed-toe shoes, plenty of water, and sunscreen—the trails are the real deal. Perfect for adventure seekers and families wanting to swap the beach for a day of living nature and genuine heritage.

This place started as a grassroots push by the Las Matas community to save the guayacán (a prized native hardwood tree that was being logged to the brink). The limestone cave and its surrounding dry forest became a sanctuary for endemic wildlife found nowhere else. Today, it doubles as the region’s green lung and an open-air classroom where locals and visitors learn the true value of native *flora criolla* and the underground aquifers that keep the whole valley alive.