This tributary of the Tagus, barely half a hundred kilometres away, is the main cause of the fauna and flora of the area, because in its surroundings there are heaps of species of animals and plants so characteristic of these places.
The shores of this river, which bathe populations like the Navalucillos, Navahermosa, and Villarejo de Montalbán, are ideal for enjoying nature giving interesting walks. In some areas there are even prepared areas so that the children can have fun.
Along its route we can also enjoy several natural ponds in which in the warmer times they go to refresh the autochthonous animals.
