Brazos Mountains to 55 million years ago during the Laramide orogeny. To the east and northeast lie the Sangre de Cristo Mountains which share a similar geological history. The Brazos Cliffs, which form a dramatic backdrop to Tierra Amarilla, are formed of Precambrian quartzite. Brazos Mountains The Brazos Mountains is a range in far northern Rio Arriba County, in northern New Mexico in the southwestern United States. A high crest runs from the border with Colorado for over in a south-southeasterly direction. The high point of the range at is on Grouse Mesa, at the Brazos Benchmark. Two miles (3 km) to
Texas Brazos Trail Texas Brazos Trail The Texas Brazos Trail is a non-profit organization which promotes heritage tourism, economic development, and historic preservation. It is one of ten regions which make up the Texas Heritage Trails Program of the Texas Historical Commission. In 1968 Texas hosted the World's fair, known as HemisFair '68, in San Antonio, Texas. In connection with this boost in international attention, the Texas Department of Transportation designated ten 650-mile circular driving regions that encompassed the entire state of Texas. These trails saw little attention after their creation until in the late 1990s when the Texas Historical Commission adopted these