From the mighty walls of Santa Elena Canyon to the desert bluffs of the Aguja Formation, the rocks of the park teem with more than 135 million years’ worth of fossils. Lizards run across ...

See Chisos Mountains Visit One of the Visitor Centers Stop by the Castolon Historic District Gaze at the Santa Elena Canyon Walk around Rio Grande Village and Hot Springs Stop by the Fossil ...

Within the National Park, the river's 20-mile stretch covering Santa Elena Canyon presents some of the most breathtaking scenics in the United States National Park Service. Accessible by river ...