Foz de Burgui Nature · Burgui/Burgi, Pirineo, Navarra A narrow gorge carved by the Esca river as it passes through Burgui, in mountainous terrain between 900 and 1,000 m altitude, not far from the better-known Foz de Arbayún. Photo: Iñaki LL (CC BY-SA 4.0) What to see and do in Burgui/Burgi