Urederra (from the basque; ur- "water", -ederra "beautiful") is the natural exit of the aquifer created in the rock massif karst of Urbasa, Navarre. The river rises in The Natural Park of Urbasa-Andía (Sierra de Urbasa), near the village Baquedano. It is 19 km long and flows into the Ega River, which is a tributary of the Ebro. The first emerge is produced in a 713 metres high clift in the southern ledge of the rock massif and makes a more than 100 metres waterfall which with the passing of the years has modelled a rocky and karstic landscape. More information...
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