Without a doubt, the most spectacular route in the Park is that of the source of the Borosa River, one of the tributaries of the Guadalquivir, which rises in the Valdezores lagoon.
The Borosa progresses from its source through spectacular canyons, such as the Cerrado de Elías or the Salto de los Órganos .
To get to the Borosa riverbed, you have to get to the dirt track that, from the Torre del Vinagre , on the Tranco road, leads to the fish farm. There you can leave your car in the parking lot. Between folds, you will arrive at the Cerrada de Elías, a spectacular place, where if you look at its limestone rock wall you will be able to observe the most well-known insectivorous plant of the place, the Piguicola vallisneriifolia .