The
San Giacomo Pass (Italian:
Passo San Giacomo) is an Alpine pass connecting
Switzerland 
and Italy. It connects
Bedretto 
on its northern side (valley of Leventina) to
Formazza 
on its southern side.
The pass is located between the Helgenhorn (west) and the
Marchhorn 
(east).
It saw most use in the 14th and 15th century, when muleteers would transport wares over it, and remained in extended use until the opening of the Gotthard railway in 1882.