Separates the Gorge of the river Arakil, also known as Foz do Oskia, Arakil, Gulina and sierra de Andia of Oskia elongated plateau valleys. It is in a small range of mountains, of low altitude and easy access, closed by the Northwest forests of the Pamplona basin and constitutes the climatic barrier between the Mediterranean climate of the Irunerri and the Atlantic air entering through the ravine of Burunda.
