The gorge of la Yecla Nature · Santo Domingo de Silos, Sierra de la Demanda, Burgos The Cauce stream has cut in the limestone a gorge so narrow that the sun barely reaches the bottom. It is walked from end to end along a succession of walkways and bridges hung above the channel, a few kilometres from the monastery. Photo: Benjamín Núñez González (CC BY-SA 4.0) What to see and do in Santo Domingo de Silos