Sierra Grande
Sierra Grande is an extinct shield volcano in northeastern New Mexico that rises 2,200 feet above the surrounding plain. It is part of the inactive Raton-Clayton volcanic field.Geography
On a clear day, Sierra Grande can be seen from as far away as Texline, Texas, as well as from the summits of the Culebra Range in southern Colorado and northern New Mexico. The eastern slopes of Sierra Grande are the easternmost point in the United States with an elevation of more than above sea level.
U.S. Highway 64, U.S. Highway 87 and the Colorado and Southern Railway run along the north and east of the volcano. The town of Des Moines is just to the northeast. To the northwest is Capulin Volcano National Monument featuring Capulin Volcano, an extinct cinder cone also in the Raton-Clayton volcanic field.
