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The range has an approximate length of 30 km, and an average altitude of 800 and 900 meters. It extends from Hoces del Ebro in Sobrón (Burgos and Álava provinces) to the Conchas de Haro in La Rioja province, where the Ebro River separates it from the Cantabrian Mountains.
- "Montes Obarenes". Chinci World Atlas. Retrieved 15 January 2013.
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