This vast pile of natural beauty, those crags and fir trees and hovering hawks, those echoing ravines and vast tumblings of snow and earth, brought me swiftly to the understanding of my own insignificance and, indeed, the insignificance of all human struggle. Michael Moorcock
It was smooth on paper, but we've forgotten about ravines. Russian Proverb
You find snails on the mountain slope with the dew from the ravines. Sicilian Proverb
It worked on paper, but [we've] forgotten about ravines (and we'll have to march [them]). Russian Proverb
After heavy rains, powerful rivers of rainwater pour down the numerous ravines (known as ghauts). Source: Internet
Also in the east is the " Little Switzerland " area, characterized by wooded glens and ravines in unusual rock formations. Source: Internet