El sistema Hundidero-Gato de Benaoján Nature · Benaoján, Serranía de Ronda, Málaga Benaoján is home to the Hundidero-Gato system, a karst formation of great importance alongside the Pileta cave, crossed by the Guadiaro river between the Sierra de Líbar and the Sierra de Montalate. Photo: El Pantera (CC BY-SA 4.0) What to see and do in Benaoján