Sierra Grande

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Sierra Grande
Sierra Grande volcano.jpg
Sierra Grande seen from the top of Capulin Volcano.
Highest point
Elevation8,723 ft (2,659 m)  NAVD 88[1]
Prominence1,880 ft (570 m) [1]
Coordinates36°42′20″N 103°52′36″W / 36.7055807°N 103.8766323°W / 36.7055807; -103.8766323Coordinates: 36°42′20″N 103°52′36″W / 36.7055807°N 103.8766323°W / 36.7055807; -103.8766323[2]
LocationUnion County, New Mexico, U.S.
Topo mapUSGS Capulin
Mountain typeShield volcano
Volcanic fieldRaton-Clayton volcanic field
Easiest routeHike

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.


The eastern slopes of Sierra Grande contain the easternmost point in the United States over 8,000 feet (2,400 m) above sea level.[3]

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.

Sierra Grande as seen from the north along US Highways 64 and 87
Andesite from a 1.9 million year old lava flow, on the eastern side of Sierra Grande.


  1. ^ a b "Sierra Grande, New Mexico". Retrieved 2013-01-26.
  2. ^ "Sierra Grande". Geographic Names Information System. United States Geological Survey. Retrieved 2013-01-26.
  3. ^ DeLorme Topo 6.0

External links[edit]