Photograph of cattle on the Sproul Ranch. The cattle lays down on the ground near a tree. There is a pile of wood to the right and behind the cattle.

Photograph of a head of cattle standing in front of trees on the Sproul Ranch. It has a roan coat, and a yellow tag with the number "20" in it in its left ear.

Photograph of two cattle on the Sproul Ranch. The red and white cow is laying down. The lighter cow is preparing to lay down.

Photograph of a cattle skull sitting on a bed of small rocks. It's crown is up against a large red rock, and there is a plant growing behind it.

Photograph of a cave swallow nest, taken at Indian Lodge in Davis Mountains State Park.

Photograph of a cave swallow's mud nest, taken at Indian Lodge at Davis Mountains State Park.

Photograph of a Cholla cactus on the Sproul Ranch near Fort Davis, Texas.

Photograph of a cistern at the Sproul Ranch. It is behind a barbed wire fence, and there are many plants in the surrounding area.

Photograph of a road leading up to mountains at the Davis Mountains State Park.

Photograph of mountains and cliffs at the Davis Mountains State Park.

Photograph of the Davis Mountains State Park.

Photograph of a valley at the Davis Mountains State Park. A dumpster is visible to the left, and there is a clump of tree stumps in the foreground.

Photograph of cliffs at the Davis Mountains State Park.

Photograph of a stone building at the Davis Mountains State Park, overlooking Skyline Drive.

Photograph of a building overlooking Skyline Drive at the Davis Mountains State Park.

Photograph of a stone building overlooking Skyline Drive at the Davis Mountains State Park.

Photograph of a pathway at the top of Skyline Drive at the Davis Mountains State Park.

Photograph of prickly pear and cholla plants at the Davis Mountains State Park. There is a prickly pear cactus in the center foreground and a second in the upper-left part of the image, both bearing ripe tuna. The cholla cacti are visible directly behind the central prickly pear; yucca and other plants are also visible in the area. In the background, there is a rocky ridge covered in scrub and buildings visible in the valley areas.

Photograph of prickly pear and cholla cacti taken from Skyline Drive in Davis Mountains State Park at twilight.

Photograph of a rock formation on top of the Skyline Drive area at Davis Mountains State Park.

Photograph of a sunset from Skyline Drive at Davis Mountains State Park.

Photograph of a sunset taken from Skyline Drive at Davis Mountains State Park.

Photograph of a sunset from Skyline Drive at Davis Mountains State Park.

Photograph of a sunset from Skyline Drive at Davis Mountains State Park.