This tour will reveal many sites of the natural park, covering part of the north marsh. It starts at the Port of Catarroja, where the typical boats used in the lagoon (albuferencs) are constructed and repaired. Moreover, in this port, exhibitions are held lateen and the procession of Sant Pere by boat in late June. On the way to the "Tancat de la Pipa", you can access to "Barranco del Poyo", crossing the parties "Bony" and "La Tancadeta" in Catarroja. From here it is easy to see warblers, marsh harriers, gulls, cormorant, herons, loons and may hear the swan or the little grebe.

      At the end of this road, you will reach the "Tancat de la Pipa", which have been carried out habitat restoration work and its suitability for public use. In this area are recreated the conditions of a water spring "Ullal" improving quality to promote the development of endemic and indigenous species of animals and plants, and promote the recovery of aquatic systems in the area.