Big Bend National Park Professional Review and Guide
"Encompassing a vast tract of wilderness on the north side of a very big bend in the Rio Grande River bordering Mexico, the park combines both desert and mountain terrain. It also contains many striking geologic structures, notably the several deep, sharp-walled canyons. Because of variations in elevations from less than 3,000 to almost 8,000 feet, Big Bend, although in desert country, has many climatic zones and a wide variety of wildlife and vegetation.
The many barren and rocky areas are a sharp contrast to both the desert flowers and cactus that bloom a brilliant white and the heavily forested mountain slopes just a few miles away. There is a little of everything at Big Bend, but you’ll probably be most impressed by the beauty of the rugged Chisos Mountains and their precipitous canyons. This eTrail explains in detail how to tour the park. In addition to a park map the details include driving tours, outdoor recreation, accommodations, campgrounds, dining, and more."