Big Bend Country is a triangle-shaped region in west Texas formed where the Rio Grande River runs southeast, then northeast, in a large loop. Big Bend National Park is located at the elbow of the bulge, comprising a much smaller portion of this region. Together with this river, 300 million years of climatic and geologic change accounts for the unusual topography and beauty of Big Bend National Park.
Links:
The official Big Bend National Park website (click here)