- Source: Delika canyon
The Delika canyon (Spanish: Cañón de Délica, Basque: Delikako arroila) is a karst canyon of Spain, located in the province of Álava. It is formed by the Nervión river near the village of Delika. The Salto de Nervión, an intermittent waterfall that is the highest in Spain [222 metres (728 ft)], flows from the canyon.