"When you're standing in front of Santa Elena Canyon and thinking these rock walls ... The project helps drive home the importance of preserving the untouched state of these precious natural ...

Mud slurps at my shoes as I slog along the banks of the Rio Grande, deep in the heart of Santa Elena Canyon at Big Bend National Park. In front of me, Charlie Gandy, founder of the Cross Texas ...

View from the mouth of Santa Elena Canyon, Big Bend National Park, Texas. View from the mouth of Santa Elena Canyon, Big Bend National Park, Texas. Tim Speer/Getty Images In Southwest Texas along ...