Name Image Date Location County Ownership Description Barfoot Park 2011 31°54′54.32″N 109°18′7.26″W / 31.9150889°N 109.3020167°W / 31.9150889; -109.3020167 (Barfoot Park ) Cochise Federal (Coronado National Forest ) One of the best U.S. examples of Madrean-influenced ponderosa pine forests. Barringer Meteor Crater 1967 35°1′38″N 111°1′21″W / 35.02722°N 111.02250°W / 35.02722; -111.02250 (Barringer Meteor Crater ) Coconino Private The world's first identified meteor crater . Canelo Hills Cienega Reserve 1974 31°33′44.09″N 110°31′33.07″W / 31.5622472°N 110.5258528°W / 31.5622472; -110.5258528 (Canelo Hills ) Santa Cruz Private (The Nature Conservancy ) Notable for the extremely rare Canelo Ladies Tresses Orchid and the Gila chub . Comb Ridge 1976 36°49′08″N 110°03′26″W / 36.8188°N 110.0572°W / 36.8188; -110.0572 (Comb Ridge ) Navajo Communal lands (Navajo Nation ) The only known location for tritylodont fossils in North America. Grapevine Mesa 1967 35°58′28″N 114°04′54″W / 35.974431°N 114.081636°W / 35.974431; -114.081636 (Grapevine Mesa ) Mohave Federal (Bureau of Land Management ) The best existing display of Joshua trees in the United States. Kaibab Squirrel Area 1965 36°24′0.6″N 112°9′11.11″W / 36.400167°N 112.1530861°W / 36.400167; -112.1530861 (Kaibab Squirrel Area ) Coconino Federal (Kaibab National Forest ) Illustrative of the habitat for the Kaibab squirrel . Onyx Cave 1974 31°43′3″N 110°46′9″W / 31.71750°N 110.76917°W / 31.71750; -110.76917 (Onyx Cave ) Santa Cruz Federal (Coronado National Forest ) Considered to be the finest cave in Arizona. Patagonia-Sonoita Creek 1970 31°31′40.83″N 110°46′31.65″W / 31.5280083°N 110.7754583°W / 31.5280083; -110.7754583 (Patagonia-Sonoita Creek ) Santa Cruz Private (The Nature Conservancy ) An example of a cottonwood-willow riparian forest and one of the last permanent stream-bottom habitat areas in southern Arizona. Ramsey Canyon 1965 31°26′52.05″N 110°18′25.88″W / 31.4477917°N 110.3071889°W / 31.4477917; -110.3071889 (Ramsey Canyon ) Cochise Private (The Nature Conservancy ) A stream-cut, vertical-sided gorge. Willcox Playa 1966 32°8′27.6″N 109°50′52.8″W / 32.141000°N 109.848000°W / 32.141000; -109.848000 (Willcox Playa ) Cochise Federal (Bureau of Land Management ) The largest "dry lake" in Arizona.