Four book set - Back Roads to the Catalan Pyrenees (Biscay Ports to El Pont de Suert) + Back Roads of the Catalan Pyrenees - 1- El Pont de Suert to La Seu D'Urgell + Back Roads of the Catalan Pyrenees - 2 - La Seu d’Urgell to Solsona + Back Roads of the Catalan Pyrenees -3- Solsona to Cardona