The Santa Elena Canyon formed by the Rio Grande River in the Big Bend National park of west Texas.

The Big Bend National Park, with over 800,000 acres encompasses river, desert, mountain and canyons. The elevations range from less than 1,800 feet along the Rio Grande River to almost 8,000 feet in the Chisos Mountains.From forested mountains, to vast deserts and from springs to river country, there is something for everyone. It is one of the remaining last wild corners of the United States.

The Pecos River and US 90 in Val Verde County Texas.The bridge over the river is 1310 feet long and approximately 273 feet above the water level. It is the highest highway bridge in Texas.

The Big Bend Desert in the Big Bend National Park with mountains in the background

The Big Bend National Park, with over 800,000 acres encompasses river, desert, mountain and canyons. The elevations range from less than 1,800 feet along the Rio Grande River to almost 8,000 feet in the Chisos Mountains.From forested mountains, to vast deserts and from springs to river country, there is something for everyone. It is one of the remaining last wild corners of the United States.

The Colorado Plateau, through which the Grand Canyon cuts. was once a seabed.The plateau was raised through plate tectonic action so that the rims of the grand canyon are now between 7,000 and 8,000 feet above sea level. Through erosion from the Colorado River and other factors, the canyon has been cut as deep as one mile in places. The canyon can be viewed from both the north and south rims. This is a view from Mather Point on the south rim of the canyon.

The painted Desert was named in 1540 by Francesco Vazquez de Coronado. These badlands in the Four Corners area are approximately 120 miles long and 60 miles wide, extending from the east end of the Grand Canyon National Park south east to the Petrified Forest National Park and north to the Navaho Nation. It is made up of easily erodable rock which allows the different layers of deposits to be exposed,

The Pecos River and US 90 in Val Verde County Texas.The bridge over the river is 1310 feet long and approximately 273 feet above the water level. It is the highest highway bridge in Texas.

The city of Carabelle, Florida's waterfront on the Carabelle River.

The St. Marks National Wildlife Refuge was extablished in 1931 for migratory birds and covers parts of three Florida counties, Jefferson, Taylor, and Wakulla. It stretches along 43 miles of the Gulf Coast of northwest Florida, encompassing over 70,000 acres. It consists of coastal marsh, islands, tidal creeks and the estruaries of seven Florida rivers.

It is also the home of the St. Marks lighthouse. established in its current location since 1842, and still in use today. The lighthouse was originallhy built in 1831 and moved to its current location in 1842 because of erosion. It stands 82 feet high.

The Pecos River and US 90 in Val Verde County Texas.The bridge over the river is 1310 feet long and approximately 273 feet above the water level. It is the highest highway bridge in Texas.

One of the exposed rock outcropings in the Big Bend Nation Park of west Texas.

The Big Bend National Park, with over 800,000 acres encompasses river, desert, mountain and canyons. The elevations range from less than 1,800 feet along the Rio Grande River to almost 8,000 feet in the Chisos Mountains.From forested mountains, to vast deserts and from springs to river country, there is something for everyone. It is one of the remaining last wild corners of the United States.

The Colorado Plateau, through which the Grand Canyon cuts. was once a seabed.The plateau was raised through plate tectonic action so that the rims of the grand canyon are now between 7,000 and 8,000 above sea level. Through erosion from the Colorado River and other factors, the canyon has been cut as deep as one mile in places. The canyon can be viewed from both the north and south rims. This is a view from Mather Point on the south rim of the canyon.

The painted Desert was named in 1540 by Francesco Vazquez de Coronado. These badlands in the Four Corners area are approximately 120 miles long and 60 miles wide, extending from the east end of the Grand Canyon National Park south east to the Petrified Forest National Park and north to the Navaho Nation. It is made up of easily erodable rock which allows the different layers of deposits to be exposed,