It connects the Engadin valley with Lago di Livigno, through Munt la Schera.

[1] The tunnel was built to transport building materials for the construction of the Punt dal Gall dam.

It was opened for public use in 1968, but is still owned and operated by the hydroelectric power company Engadiner Kraftwerke AG.

(A different pattern of alternating traffic applies on Saturdays in winter.

As of May 2015, the standard daytime toll for a single car journey through the tunnel is CHF16/EUR15.