On the arid western border of the Texas Hill Country, halfway between Del Rio and Sonora in Val Verde County, lies Dolan Falls Preserve. Here the rough-hewn landscape gives way to the turquoise and jade waters of the Devils River. Fed by powerful freshwater springs that emerge from the bases of towering limestone cliffs, the Devils River and its tributary, Dolan Creek, comprise what many consider the most pristine river in Texas; they also feed Dolan Falls, one of the state’s largest continuously flowing waterfalls.
To protect this exceptional piece of Texas' natural heritage, The Nature Conservancy (TNC) established the 4,788-acre Dolan Falls Preserve, which is bolstered by an additional 135,000 acres that TNC has permanently protected along roughly 25 miles of the Devils River. As the Devils flows through the preserve's canyons, it supports stands of oaks and sycamore bounded by steep cliffs dotted with scrub juniper and mesquite. This and other riparian corridors in the region serve as important migration paths for birds and monarch butterflies traversing the dry west. Rare and endangered species such as Texas snowbell and Mexican white oak are also found here.