Karrantza is the largest valley in Biscay, a spot where nature shows its most fascinating side. Located on the border with Burgos and Cantabria, protected by the Montes de Ordunte to the south and by the Parque Natural de Armañón to the north.
On this route, we will choose the Sierra de Ordunte, a mountain range of more than 20 km crowned by several peaks exceeding 1,000 m. We will leave the district of Concha, the central core of the municipality, heading south, towards Balgerri.
It won't take you long to reach a land populated by forests, mountain pastures, moors, and peatlands full of plants. On one side and the other, we will see remains of coal bunkers, pastoral cabins, and even a strange megalithic monument. Leave behind the largest beech forest in Biscay.
A “Mugarri” will tell us that we are on Burgos soil. We will descend to the Embalse de Ordunte (reservoir), which supplies water to Bilbao and most of Enkarterri. From there, we will take several mountain trails to return to our starting point in Karrantza.
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