In photos, the history of the 1931 unfinished metro line found in Barcelona

In the middle of a construction site to install a pneumatic garbage collection network, they discovered an attack well and a tunnel built in 1931 for an unfinished metro line in the Raval, central district of the city Barcelona (Spain). The project aimed to cross the Raval and connect the Liceu station to a new stop on Avenida Parallel. The work has never been completed. "Given the large amount of water present inside the well and the tunnel, it was not possible to document the possible structures located at the bottom of the two zones," the report said. Barcelona City Council.