This highly saline seasonal lagoon with associated islands lies in a large enclosed (endorheic) drainage basin fed by groundwater, rainwater and surface water, and regularly dries out. It is one of the best examples of a steppe pool with rich submerged aquatic vegetation and adjoining salt marsh and steppe habitats in Spain. The Site is an important area for many waterbirds such as the nationally endangered Eurasian curlew (Numenius arquata) and the common snipe (Gallinago gallinago). Climate change has led to enduring droughts and unusually prolonged periods with little or no inundation. Human activities include scientific research and birdwatching.