The Celtiberian hillfort of Los Castillejos Nature · Cubo de la Solana, Almazán, Soria Image of Cubo de la Solana, not of the place itself. On the summit of a broad hill at about a thousand metres of altitude, bounded to the south by the Duero, the remains of a Celtiberian settlement with its necropolis are preserved, proof that the place was inhabited long before the present villa. Photo: Pigmentoazul (CC BY-SA 4.0) What to see and do in Cubo de la Solana