San Luis in Costilla County, Colorado — The American Mountains (Southwest)
La Sierra
Mountain of Life
The majestic Sangre de Cristo Mountains facing you, or La Sierra, are the life of this community. This land was part of the Sangre de Cristo Land Grant, issued to Narciso Beaubien and Stephen Lee in 1843 by the Mexican government. With this gift came the responsibility of settling and managing this land for the benefit of the community.
Caretakers of this land, the people did not see themselves as wealthy, but having everything they needed for a thriving community. Wealth was measured in deep connections to the land and each other.
In the mid-1900s, the people lost their rights to La Sierra during a land purchase. The new owners denied access to the local residents, a right that was guaranteed by the Treaty of Guadalupe Hidalgo. Recently, in an unprecedented case, heirs to the land grant regained access to traditional uses of these mountains.
For more than one hundred years, the people here have maintained a pioneer spirit that helped make this community a success. They continue to be stewards of the land, water, culture, and traditions by maintaining traditional land uses, natural farming, and unique spiritual beliefs. The people of La Sierra are keepers of their heritage in a changing world.
[photo and image captions]
Sheep are still grazed on the lush grasses of La Sierra, as they have been for generations.
The settlers depended on these mountains for many of their needs wood for building and fuel, rich hunting and foraging grounds for feeding their families and creating natural remedies, and grasses for grazing their cattle.
Erected by Colorado Scenic and Historic Byways Commission, Colorado Historical Society, Colorado Department of Transportation, and The Nature Conservancy.
Topics. This historical marker is listed in these topic lists: Hispanic Americans • Settlements & Settlers. A significant historical year for this entry is 1843.
Location. 37° 12.135′ N, 105° 25.525′ W. Marker is in San Luis, Colorado, in Costilla County. It is on Main Street (State Highway 159) just north of 6th Street, on the left when traveling south. The marker is near the sidewalk on the west side of San Luis Community Park. Touch for map. Marker is at or near this postal address: 650 Main Street, San Luis CO 81152, United States of America. Touch for directions.
Regionally,

Photographed by Cosmos Mariner, July 12, 2025
2. La Sierra Marker
Welcome Caminante to Los Caminos Antiguos Scenic & Historic Byway and The Sangre de Cristo National Heritage Area
Looking south. This marker is the leftmost of two interpretive panels on the north side of the Los Caminos Antiguos Scenic & Historic Byway kiosk in San Luis. Main Street (Colorado Highway 159) is on the right.
Looking south. This marker is the leftmost of two interpretive panels on the north side of the Los Caminos Antiguos Scenic & Historic Byway kiosk in San Luis. Main Street (Colorado Highway 159) is on the right.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Faith on the Frontier (here, next to this marker); Oldest Town in Colorado (here, next to this marker); Welcome to El Valle de San Luis (here, next to this marker); San Luis (about 600 feet away, measured in a direct line); Hispano Folkways (about 600 feet away); San Luis Valley Country (about 600 feet away); Acequias (about 600 feet away); San Luis and Costilla County Veterans Memorial (approx. 0.2 miles away). Touch for a list and map of all markers in San Luis.
Also see . . . Sangre de Cristo Land Grant (Wikipedia).
Excerpt: The Sangre de Cristo Land Grant in the San Luis Valley of southern Colorado and northern New Mexico consists of 1,000,000 acres of mostly arid land. It was awarded by the government of New Mexico to the Beaubien family in 1843. The land grant was originally settled by Hispanics from New Mexico. Since the incorporation of the area of the grant into the United States in 1848, legal disputes between the descendants of the Hispanic settlers and Anglo ranchers about ownership of and access to some of the land in the grant area have been frequent and continue into the 21st century. Competition for land and water between Hispanics and Anglos began in the 1860s and has been constant in the Sangre de Cristo grant ever since.(Submitted on March 2, 2026, by Cosmos Mariner of Cape Canaveral, Florida.)
Credits. This page was last revised on March 2, 2026. It was originally submitted on February 26, 2026, by Cosmos Mariner of Cape Canaveral, Florida. This page has been viewed 29 times since then. Photos: 1, 2. submitted on March 2, 2026, by Cosmos Mariner of Cape Canaveral, Florida.
