Rockhound State Park in New Mexico, about seven miles southeast of Deming in the Florida Mountains, is known for mineral-rich ground where visitors may collect quartz crystals, geodes, jasper, perlite, and other stones for personal use. Opened in 1966, it was the first state park in the United States to allow such collecting. Its two units include a main camping area in the Little Florida Mountains and the day-use Spring Canyon Recreation Area in the northern Florida Mountains. The park’s importance also comes from its volcanic geology, hydrothermal mineral deposits, and nearby mining history from about 1880 to 1956.