At the mouth of the Pesquera river, at the end of the Iznájar reservoir. This is an area of special ecological interest, since wader birds tend to nest here, as well as having an interesting geological formation such as the Cerradura del Pesquera: two large limestone masses that enclose the river, forming a narrow gorge. In this area it is intended to create a recreational area with two ornithological observatories as well as interpretive panels of flora, fauna and the medieval mill located in the Lock.