Line 1 , shortened to L1 , coloured red and often simply called `` Línia vermella '' ( `` Red Line '' ) , is the second oldest Barcelona Metro line , after line L3 .
Line 1 , shortened to L1 and known as `` Hospital de Bellvitge - Fondo '' , coloured red and often simply called `` Línia vermella '' ( `` Red Line '' ) , is the second oldest metro line in Barcelona , after L3 .