The N-123 road that heads north from Barbastro runs parallel with this magnificent gorge, which reaches a depth of 300m. It was formed by the erosion of the limestone of the north face of the Carrodilla mountain range by the power of the River Ésera. The karst effect has created a number of caves, such as the Moro cave, where evidence of human activity from the Bronze Age can be seen.

See LIC Congosto de Olvena

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