rio grande del norte national monument with bidge over river canyon and sangre de christo mountains near taos, new mexico

environment mountains transport landscape sagebrush national monument mountain panorama vertical christo geology terrain plateau natural america western highway erosion grande canyon sangre mexico bridge cristo valley desert nature united states spring hiking cliffs plains norte bidge river route gorge cliff trail track ridge north rocky steel range taos deep rock soil west snow Soutwest Southwestern desert arid dry view viewpoint vista blue sky panorama American del USA rio grande