Sierra de Illón: gorges, hermitages and the Faulo Dolmen.
Take a gentle, easy hike through the Sierra de Illón in north-west Navarra on the border with Aragón to some spectacular viewpoints. Walk through mixed woodland, beech forest and Pyrenean oak groves. Apart from the Sierra de Leire, this is the only place you’ll find this oak in Navarra.
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