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 trails as their Heritage Trail Program. A largely rural area of the U.S. state of Texas, the 18-county Brazos Trail Region historically was dependent on cotton and the railroad for survival. The region is named for the Brazos River which flows through the area, and is still a vital water source. The area's primary industries are cotton, cattle and sugar cane. The railroads connected the region to the Gulf of Mexico for shipment throughout the United States and Europe. In frontier times many European groups settled in the area including: Norwegians, Germans, Scots, Czech, and the Wends. Many examples of