Los Caballos (in core of the Ouachita Structural Belt)

Historical marker location:
Marathon, Texas
( From Marathon, take US 385 about 12 mi. south, in roadside park area.)
Marker installed: 1970
Marker size: 27" x 42"

Highly deformed rocks in the Ouachita Fold Belt, a northeasterly trending range, uplifted about 275 to 290 million years ago. The intricate folding is shown by whitish rock bands--called caballos (the Spanish word for horses)--exposed on both sides of this highway. The Ouachita Fold is comparable in age to the uplift that formed the Appalachians in the eastern part of the United States.

The northwesterly trending Del Norte-Santiago range (southmost extension of the Rocky Mountains) forms the southwestern skyline. The rocks of the range were deposited in a sea that coverd the Ouachita Fold Belt after erosion had reduced the highlands and a later submergence lowered the area. Santiago Peak (named for a local man who was killed by Indians and buried beneath the peak) is the high, flat-topped mountain to the southwest. It was once a mass of molten magma that cooled and hardened underneath the earth's surface and was uncovered by later erosion. The Del Norte-Santiago range, uplifted and folded 40 to 60 million years ago, is not half the age of the Ouachita Fold. This is a remarkable fusion of "old" and "young" mountains--and is unmatched at any other site in North America

As one of the most visible programs of the Texas Historical Commission (THC), historical markers commemorate diverse topics in Texas history, including: the history and architecture of houses, commercial and public buildings, religious congregations, and military sites; events that changed the course of local and state history; and individuals who have made lasting contributions to the state, community organizations, and businesses.

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The Texas Rangers, a famous law enforcement agency, were first organized in 1835 to protect settlers from Native American attacks.
Brewster County, located in southwestern Texas, has a rich and multifaceted history that dates back thousands of years. The region was originally inhabited by indigenous peoples, including the Mescalero Apache and Comanche tribes, who hunted and gathered along the Rio Grande and its tributaries. The area attracted Spanish explorers in the 16th century, who sought to establish trade routes and establish settlements in the region.

The modern history of Brewster County began in the mid-19th century when it was part of the larger Presidio County. It was named after Henry Percy Brewster, a secretary of war for the Republic of Texas. After the Civil War, the county experienced an influx of settlers, primarily ranchers, who took advantage of the rich grasslands and water sources in the area. Cattlemen such as Alta Adele Koch, known as the "Cattle Queen of Texas," played a significant role in shaping the county's economy.

The discovery of silver in the nearby Chinati Mountains in the late 19th century led to a mining boom in Brewster County. The town of Terlingua became a center of mining activity, attracting thousands of prospectors seeking fortune. However, the silver boom was short-lived, and by the early 20th century, the mines had closed, causing a decline in population and economic activity.

Brewster County's landscape and wildlife also played a role in its history. The establishment of Big Bend National Park in 1944 helped to conserve the region's natural beauty and attract tourists. Today, Brewster County is known for its stunning vistas, outdoor recreational opportunities, and a thriving art and cultural scene, making it a popular destination for visitors from around the world.

This timeline provides a condensed summary of the historical journey of Brewster County, Texas.

  • 1887: Brewster County is established and named after Henry Percy Brewster, a Secretary of War for the Republic of Texas.
  • 1889: Alpine, the county seat, is founded as a water stop for the Galveston, Harrisburg and San Antonio Railway.
  • 1900: The completion of the Southern Pacific transcontinental railroad brings growth and prosperity to the county.
  • 1921: Big Bend National Park is established, including a large portion of Brewster County.
  • 1933-1938: The Civilian Conservation Corps (CCC) establishes numerous camps in the area, contributing to infrastructure development and conservation efforts.
  • 1943: Construction begins on the Black Gap Wildlife Management Area, a renowned wildlife conservation and research site.
  • 1998: The Terlingua ghost town is designated as a Recorded Texas Historic Landmark.
  • 2007: The US-Mexico border fence is constructed through parts of Brewster County, impacting local communities.