The “Les Olles” pond, with its 54 hectare, is the smallest of the Ebro Delta Natural Park, but it has a great wealth of environments and a large population of waterfowl. Its main attraction is the great diversity of birds that can be observed in flight. Communicated with the Fangar Bay between fields of rice fields and dunes, the total protected area reaches almost 373 hectares. It has several itineraries bordering it and allowing you to observe the richness of its fauna and its vegetation.