The underground station is accessed through a separate set of ticket barriers to the main line platforms.
The main line platform, number 1, is a through platform.
Two large volumes were dug, one on either side of the original station, giving access to the stacked blue line platforms below.
The main line platforms were removed before electrification in the 1960s.
The fast line platforms were taken out of use at this time.
There is also an intermediate hall which connects directly with line 1 platform toward Fondo.
There is access to the fast line platform (London bound).
Access to the Blue line platform via the latter entrance is by two escalators.
These landings provide views of the great volumes over the green line platforms below.
Two elevators now connect the orange line platform to the mezzanine.