Calle Cidacos
It takes its name from the Cidacos river, a tributary of the Ebro that rises in the lands of Soria and crosses La Rioja to Calahorra.
The Cidacos rises in the lands of Soria near the Oncala pass and runs some eighty kilometres through La Rioja before joining the Ebro near Calahorra. The Calle Cidacos fits the pattern by which the streets of El Viso were named in the 1920s: short, tree-lined streets bearing the names of rivers and features of Spanish geography, a repertoire that supplied labels without honouring anyone in particular.
The Cidacos valley holds one of the largest sets of dinosaur tracks in Europe. Around Enciso there are more than a thousand footprints from the Early Cretaceous, the traces of iguanodonts and theropods pressed into the rock. The Madrid street thus carries the name of a river that, along its Rioja stretch, preserves one of the most remarkable fossil records on the peninsula.