The Oroncillo at the exit of the gorge Nature · Ameyugo, Ebro, Burgos Ameyugo lies at 555 metres of altitude on the bank of the Oroncillo, just where the river leaves the Pancorbo gorge and the valley opens out towards the Ebro between the last foothills of the Montes Obarenes. Photo: LBM1948 (CC BY-SA 4.0) What to see and do in Ameyugo