La Ventana Natural Arch is located in El Malpais Natural Conservation Area in New Mexico, Cibola county, USA. The opening eroded in Dakota sandstone formation has a span of 135 feet (41 meters) and it is the second largest natural arch in New Mexico. The opening can be visited by a short trail along hwy 117 south of Grants. NABSQNO 13S-235924-3862355