The Alcubierre-Zaragoza road at the Mirador de las Tres Huegas pass, Sierra de Alcubierre
Martha Bridegam writes: Alcubierre is the town nearest Orwell's first posting as a Spanish Loyalist volunteer in January 1937, along the Sierra de Alcubierre ridge. My husband and I stopped at the pass where the main road from Alcubierre runs over the ridge straight toward Zaragoza. We don't know how far away Orwell was actually serving.
"... As the road struck into the sierra we branched off to the right and climbed a narrow mule-track that wound round the mountain-side. The hills in that part of Spain are of a queer formation, horseshoe-shaped with flattish tops and very steep sides running down into immense ravines. On the higher slopes nothing grows except stunted shrubs and heath, with the white bones of the limestone sticking out everywhere. ..."
- Homage to Catalonia, Chapter 2