The Magdalena Mountains are a regionally high, mountain range in Socorro County, in west-central New Mexico in the southwestern United States. The highest point in the range is South Baldy, at 10,783 ft (3,287 m), which is also the tallest peak in Socorro County. The range runs roughly north-south and is about 18 miles (28 km) long. The range lies just south of the village of Magdalena, and about 18 miles (28 km) west of Socorro. The Magdalena Mountains are an east-tilted fault-block range, superimposed on Cenozoic calderas. The complex geologic history of the range has resulted in spectacular scenery, with unusual and eye-catching rock formations. They form part of the western edge of the Rio Grande Rift Valley, fronting the La Jencia Basin. The mountains remain isolated and natural due to the absence of any significant human development within or near the range. The range takes its name from a volcanic peak on the west side, named Magdalena Peak, after Mary Magdalene. A talus formation and shrub growth on the east slope of Magdalena Peak is said to resemble a woman's face. According to Julyan's Place Names of New Mexico, one legend about the mountain purports that "a group of Mexicans were besieged by Apaches on the mountain, when the face of Mary Magdalene miraculously appeared, frightening the Indians away." Management Most of the Magdalena Mountains are within the Magdalena Ranger District of the Cibola National Forest, and parts are also administered by the Bureau of Land Management. While there are no designated Wilderness areas in the range, the Ryan Hill Inventoried Roadless Area (IRA) is sizeable (up to approximately 35,000 acre). In 1980, Public Law 96-550 established Langmuir Research Site in the Magdalena Mountains. Congress found the mountains uniquely suited for atmospheric and astronomical research which has been conducted at Langmuir Laboratory near South Baldy since the mid-1960s. The Act designated a 31,000 acre portion of the mountain as essentially roadless, but not wilderness. There is overlap between the Ryan Hill IRA and the congressionally designated Langmuir Research Site management area. Directly adjacent to the southern boundary of the Ryan Hill IRA lies the Devil's Reach Wilderness Study Area (WSA). The Devil's Reach WSA and its neighboring Devil's Backbone WSA are both managed by the BLM. The Ryan Hill IRA, Devil's Reach WSA, and Devil's Backbone WSA combine to form a 44,050-acre contiguous roadless area on the southern