El Malpais National Conservation Area (NCA) was established in 1987 and is managed by the Bureau of Land Management. The 231,230-acre NCA includes two wilderness areas — West Malpais and Cebolla — covering almost 100,000 acres. El Malpais NCA was established to protect nationally significant geological, archaeological, ecological, cultural, scenic, scientific, and wilderness resources surrounding the Grants Lava Flows. In addition to the two wilderness areas, the NCA includes dramatic sandstone cliffs, canyons, La Ventana Natural Arch, the Chain of Craters Back Country Byway, and the Narrows Picnic Area. There are many opportunities for photography, hiking, camping, and wildlife viewing within this unique NCA. Open year-round. Visitors should be cautious during the monsoon season because unpredictable weather may occur and cause flooding. Adjacent to the NCA is the El Malpais National Monument, managed by the National Park Service.