This section of the track runs through a territory with great ethnological and environmental value. Its start is located in one of the historical accesses to the town of Ronda, from which we can see the majestic Tajo and the Puente Nuevo (New Bridge). Before reaching the puerto de la Muela (pass of la Muela), we will cross the Hoya del Tajo (river basin of el Tajo) and its splendid Andalusi vegetable gardens. After these, we will come across the stone pine forest of mount Dehesa del Mercadillo, and then a wide valley where the Guadalcobacín and Guadalevín merge their waters to become the Guadiaro river, one of the most important in the Mediterranean Hydrographic District. From there, we will wander for a while along the Algeciras-Bobadilla railroad track until we get to the Pasada de Gibraltar, where we will follow a trail in continuous ascent that crosses the steep mountainside of the Algarrobo mountain range. From the nearby puerto de Ronda (pass of Ronda) we will enjoy an attractive panoramic view of the Valle del Guadiaro (Guadiaro Valley) and the location of the cueva del Gato (Cat’s cave). In our descent towards Benaoján, we will be surprised by the contrast between the sharp karstic mountainside and the polje on which the town sits. During the next stretch of the trail, we will be able to see the source of the Benaoján river, impressive after constant rains, and the neighbourhood of la Estación (Benaoján Station). The second part of the track runs alongside the left bank of the Guadiaro river and through a narrow valley, in between the Benaoján and the del Palo mountain ranges to the West, and the Monte de las Viñas (Mount of the Vineyard) and the del Conio mountain range to the East. The latter separates the Guadiaro from the nearby Valle del Genal (Genal Valley). During the journey, we will walk through a green canopy of holm oaks and gall-oaks. The other unique feature of the track is the railway line, which crosses the diverse landforms of the area, passing through tunnels and over viaducts. An important part of the track is through the Sierra de Grazalema Natural Park.