The works on the L8 of the Generalitat Railways are preparing for a new phase: the arrival of the Tunnel boring machine that will drill through Barcelona from Plaza Espanya to the Gràcia neighborhood, next year. To introduce this large cutting machine underground, it is obviously necessary to make a hole through which the pieces will be lowered into the subsoil, the machine will be assembled, and drilling will begin. This attack shaft will be located on Gran Via, next to Plaça Espanya, between Llança and Vilamarí streets. It will run 20 meters underground but will nevertheless be very visible to residents because the hole doesn't reach it alone.