[en] The railway line connecting Ponferrada and Villablino was built during the First World War. At that time, Spain was plunged into a deep energy crisis, thus the Spanish government developed a plan to extract national coal in order to control the high energy prices. This line was built in a record time of ten and a half months, and it was completed on July 23, 1919. From the beginning of its construction, this line together with the thermal power stations, where the coal extracted from the Bierzo mines was burned, was the economic engine of Bierzo and the livelihood of thousands of Bierzo families. The object of study of this thesis is the rehabilitation of the area with the railroad line as the main axis, starting with the formal study of these architectures, continuing with the types of materials used in them, and their logistics, and concluding with how these buildings are constructively resolved. As a fundamental line of this thesis, in addition to the research on the historical background of the Ponfeblino (as the Ponferrada-Villablino railway line is referred), we focus on the analysis of data and the development of new passive architecture strategies linked to the area and conditioned to its use. The use of the different buildings of the Ponfeblino is conditioned by an analysis of the tourist resources already available in the surroundings of the railway line, which is one of the secondary lines of research of this thesis. Finally, one of the fundamental aims of this thesis is to give back, under the premise of rehabilitation and sustainability, what the latter concept snatches from the Bierzo region when coal mining was banned in Spain.

[gl] A liña ferroviaria que comunica Ponferrada e Villablino nace durante o transcurso da Primeira Guerra Mundial. Nesta época, España estaba sumida nunha profunda crise enerxética, polo que desde o goberno de España desenvólvese un plan de extracción de carbón nacional para controlar os altos prezos da enerxía. Esta liña constrúese en tempo récord, durando a súa construción dez meses e medio, a cal conclúe o 23 de xullo de 1919 e desde o inicio da súa construción, esta liña será, xunto coas centrais térmicas onde se queimaba o carbón extraído nas minas do Bierzo, o motor económico do Bierzo e o sustento de miles de familias bercianas. O obxecto de estudo desta tese será a rehabilitación da zona coa liña de ferrocarril como eixo condutor, empezando polo estudo formal destas arquitecturas, seguindo polos materiais utilizados nestas, e como se resolve a loxística de materiais, ademais de como se resolven construtivamente estas edificacións. Como liña fundamental desta tese, a parte da xa mencionada investigación dos antecedentes históricos do Ponfeblino (así se denomina a liña de ferrocarril Ponferrada- Villablino), centrarémonos na análise de datos e desenvolvemento de novas estratexias de arquitectura pasiva ligadas á zona e condicionadas ao uso. O uso das distintas edificacións do Ponfeblino virá condicionado por unha análise dos recursos turísticos xa dispoñibles na contorna da liña de ferrocarril, o cal será unha das liñas secundarias de investigación desta tese. Será motivo fundamental desta tese, devolver baixo a premisa de rehabilitación e sustentabilidade, o que este mesmo último concepto arrebátalle á comarca do Bierzo ao prohibir en España a extracción de carbón.