Monte Ceneri in the context of "Canton of Ticino"

Ticino (/tɪˈtʃiːnoʊ/ tih-CHEE-noh), sometimes Tessin (/tɛˈsiːn, tɛˈsæ̃/ tess-EEN), officially the Republic and Canton of Ticino or less formally the Canton of Ticino, is one of the 26 cantons forming the Swiss Confederation. It is composed of eight districts and its capital city is Bellinzona. It is also traditionally divided into the Sopraceneri and the Sottoceneri, respectively north and south of Monte Ceneri.

Ticino is the southernmost canton of Switzerland. It is one of the three large southern Alpine cantons, along with Valais and the Grisons. However, unlike all other cantons, it lies almost entirely south of the Alps and has no natural access to the Swiss Plateau. Through the main crest of the Gotthard Massif and adjacent mountain ranges, it borders the canton of Valais to the northwest, the canton of Uri to the north and the canton of Grisons to the northeast; the latter canton being also the only one to share some borders with Ticino at the level of the plains. The canton shares international borders with Italy as well, including a small Italian enclave.

The Gotthard railway (German: Gotthardbahn; Italian: Ferrovia del Gottardo), named after the Saint-Gotthard Massif, is the Swiss trans-alpine railway line from northern Switzerland to the canton of Ticino. The line forms a major part of an important international railway link between northern and southern Europe, especially on the Rotterdam-Basel-Genoa corridor. The Gotthard Railway Company (German: Gotthardbahn-Gesellschaft at Lucerne) was the former private railway company that financed the construction of and originally operated that line.

The railway comprises an international main line through Switzerland from Basel or Zürich to Immensee to Chiasso, together with branches, from Immensee to Lucerne and Rotkreuz, from Arth-Goldau to Zug or Pfäffikon SZ, and from Bellinzona to Chiasso via Locarno and Luino. At Chiasso, the line connects to the Milan–Chiasso railway, which runs across the Swiss–Italian border. The main line, the second-highest standard railway in Switzerland, penetrates the Alps using the Gotthard Tunnel at 1,151 metres (3,776 ft) above sea level. The line then descends as far as Bellinzona, at 241 metres (791 ft) above sea level, before climbing again to the pass of Monte Ceneri, on the way to Lugano and Chiasso. The extreme differences in altitude necessitate the use of long ramped approaches on each side, together with seven spirals.

The Ceneri Base Tunnel (CBT; Italian: Galleria di base del Monte Ceneri) is a Swiss railway base tunnel in the canton of Ticino. It passes under Monte Ceneri between Camorino in the Magadino Flat and Vezia near Lugano; it bypasses the former high-altitude rail route through the Monte Ceneri Tunnel. It is composed of two single-track tunnels, each 15.4 km (9.6 mi) long. It is part of the New Railway Link through the Alps (NRLA) project for faster north-south rail links across the Swiss Alps.

An exploration tunnel near Sigirino was excavated between 1999 and 2003 to gain geological data on the rock formations at the Ceneri Base Tunnel's level. Based on those data, it was decided to excavate most of the tunnel with traditional blasting methods and only drill a small part using a faster tunnel boring machine (TBM). Both the CBT and Gotthard Base Tunnels were built under contract from the Swiss Federal Government by Alptransit Gotthard AG. Construction of the two single-track bores started during March 2006. The official start of the CBT's construction phase was celebrated on 2 June 2006 with the laying of a foundation stone. The final breakthroughs took place on 21 January 2016 (west tube) and 26 January 2016 (east tube). Rail service started on 4 September 2020 and was operationalised for freight in December 2020.