Aquatic ecosystem of great uniqueness that brings life, nature and leisure to its adjacent municipalities. Located at 860 meters above sea level, its southern end practically enters the urban center of Pétrola. This lagoon is one of the wetlands of greatest interest in the province, as it maintains an important community of waterfowl, being an ideal site for practice of ornithological tourism. At dusk, in spring, you can see the arrival of flocks of ducks and the courtship stops of the nesting species. During autumn and winter, you can observe the passage of migratory birds and the arrival of flocks of wintering birds. The salinity of the lagoon waters can easily exceed that of sea water. This peculiarity and the seasonal changes in its hues are mainly due to the natural biogeochemical processes that are currently taking place under the bottom of the lagoon. These processes, which give rise to very striking springs, leave a particular “biological and geological footprint” that is exclusive to this La Mancha wetland. This lagoon is one of the most inte…