Union County(21) ► ADJACENT TO UNION COUNTY Colfax County(24) ► Harding County(2) ► Quay County(16) ► Baca County, Colorado(2) ► Las Animas County, Colorado(41) ► Cimarron County, Oklahoma(7) ► Dallam County, Texas(12) ► Hartley County, Texas(7) ►
Touch name on this list to highlight map location. Touch blue arrow, or on map, to go there.
On U.S. 64, 0.1 miles west of County Road B080, on the right when traveling west.
Largest extinct volcano in northeastern New Mexico, Sierra Grande rises to an elevation of 8,720 feet, one of many volcanos, cinder cones, and flows that cover more than 1,000 square miles of area in northeastern New Mexico and southeastern . . . — — Map (db m88754) HM
Near U.S. 64, 0.1 miles south of County Road A049.
Largest extinct volcano in northeastern New Mexico, Sierra Grande rises to an elevation of 8,720 feet, one of many volcanos, cinder cones, and flows that cover more than 1,000 square miles of area in northeastern New Mexico and southeastern Colorado . . . — — Map (db m88761) HM