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
March to the Brazos April Fool’s Day pranks, was becoming a little too regular occurrence for the Commandant. The next year the Commandant issued General Order No. 27 and began what became known as the “Hike to the Brazos” and eventually the “March to the Brazos.” The hike originated in 1909 and was held March 31 through April 1 to keep the cadets from playing April Fool’s jokes on each other and their instructors. This tradition was held annually until 1912 at which point it was discontinued. March to the Brazos was revived in 1977 when cadet leadership saw the natural tie between March