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It is also naturalized in the Ebro Valley in parts of Zaragoza, Teruel, Lleida and Tarragona, and can be found near rivers, irrigation canals and road ditches.
It is located in the middle of the depression of the Ebro valley at the foot of the mountains of the Yugo and the Zaragoza region of Cinco Villas.
Overall the vast majority of important Neolithic sites are placed in the southern part of the country (Ebro valley): Fuente Hoz, Peña Larga, Berniollo and La Renke in Araba; Zatoia, Abauntz, Peña, Padre Areso and Urbasa 11 in Navarre; Herriko Barra in Gipuzkoa.
CHA defends a federal state, greater financial resources for Aragon, and the protection of the environment and hydrological resources of the Ebro Valley.