 To the south of Giubiasco station, the Gotthard railway's main line commences its climb to the Monte Ceneri Tunnel under the Monte Ceneri Pass, leaving the valley of the Ticino river that it has followed since it left the Gotthard Tunnel, and heading for Lake Lugano.The steep line over Monte Ceneri is not suitable for high-speed rail or heavy freight trains, and a new rail tunnel, the Ceneri Base Tunnel, is currently under construction to avoid it.As a major junction station, Giubiasca has two island platforms serving four platform tracks, together with a number of freight tracks.