page_title: Pajares Base Tunnel
hierarchical_section_title: Pajares Base Tunnel
caption_attribution_description: Obras del túnel de la variante de Pajares para el tren de alta velocidad Madrid-Gijón. La Pola de Gordón. León. España.
context_page_description: The Pajares Base Tunnel is a twin pair of under construction 24,667 m long railway tunnels below Puerto de Pajares pass in the Cantabrian Mountains, Spain. The tunnels will be on the AVE line from Valladolid to Gijón but could be used also by freight trains in the future. The tunnels are affected by major water leakage, which currently delays their completion. The tunnels are currently expected to be completed in 2020, and open to passenger traffic by 2021. Although originally both tunnels were to be fit for standard gauge high-speed rail only, the plans changed mid-construction to be dual gauge with Iberian gauge for cargo use.
  25 kV AC electrification will eventually be needed but it is unclear whether this will be the system installed at the opening date.
context_section_description: The Pajares Base Tunnel is a twin pair of under construction 24,667 m (80,928 ft) long railway tunnels below Puerto de Pajares pass in the Cantabrian Mountains, Spain. The tunnels will be on the AVE line from Valladolid to Gijón but could be used also by freight trains in the future. The tunnels are affected by major water leakage, which currently delays their completion. The tunnels are currently expected to be completed in 2020, and open to passenger traffic by 2021. Although originally both tunnels were to be fit for standard gauge high-speed rail only, the plans changed mid-construction to be dual gauge with Iberian gauge for cargo use. 
  25 kV AC electrification will eventually be needed but it is unclear whether this will be the system installed at the opening date.
caption: Works on portal
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