The river Irati and the river Salazar with the passage of time, have eroded the Sierra de Leyre, creating the Gorges of Lumbier and Arbayún, natural spaces of great beauty. The Foz de Lumbier can be easily traveled by inside, while the Arabayun has upgraded areas to enjoy the scenery, as "The viewpoint of Iso". The route continuapor the Pyrenees navarro towards Ochagavía, picturesque village from which US approach to know the jungle of Irati-that after it jungle black German-is the forest of beeches and firs best preserved of Europe. There you will find clearly marked trails to enjoy in family, and we complete the excursion visiting the interpretation centre of the Irati forest Ochagavía occurring.