The Lopper II Rail Tunnel is a

railway Rail transport (also known as train transport) is a means of transport using wheeled vehicles running in railway track, tracks, which usually consist of two parallel steel railway track, rails. Rail transport is one of the two primary means of ...

tunnel A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ve ...

in the

canton of Nidwalden Canton of Nidwalden or Nidwald ( ; ; ; ) is one of the Canton of Switzerland, 26 cantons forming the Switzerland, Swiss Confederation. It is composed of eleven municipalities and the seat of the government and parliament is in Stans. It is tradi ...

in central

Switzerland Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...

. It forms part of the

Zentralbahn The Zentralbahn is a Swiss railway company that owns and operates two connecting railway lines in Central Switzerland and the Bernese Oberland. It was created on January 1, 2005, with the acquisition of the independently owned Luzern–Sta ...

Luzern–Stans–Engelberg line, which links

Lucerne Lucerne ( ) or Luzern ()Other languages: ; ; ; . is a city in central Switzerland, in the Languages of Switzerland, German-speaking portion of the country. Lucerne is the capital of the canton of Lucerne and part of the Lucerne (district), di ...

with

Engelberg Engelberg (lit.: ''mountain of angel(s)'') is a village resort and a municipalities of Switzerland, municipality in the Cantons of Switzerland, canton of Obwalden in Switzerland. Alongside the central village of Engelberg, the municipality enc ...

, between Hergiswil station and Stansstad station. It is in length, and carries

metre gauge Metre-gauge railways ( US: meter-gauge railways) are narrow-gauge railways with track gauge of or 1 metre. Metre gauge is used in around of tracks around the world. It was used by several European colonial powers including France, Britain and ...

() track electrified at 11 k V AC 16 2/3 Hz using

overhead catenary An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, Electric multiple unit, electric multiple units, trolleybuses or trams. The generic term used by the International Union ...

. The tunnel runs under the Lopper, a shoulder of

Mount Pilatus Pilatus, also often referred to as Mount Pilatus, is a mountain massif overlooking Lucerne in Central Switzerland. It is composed of several peaks, of which the highest () is named ''Tomlishorn''. Geography and transport The whole mountain ...

which extends into

Lake Lucerne Lake Lucerne (, literally 'Lake of the four Waldstätte, forested settlements' (in English usually translated as ''forest cantons''), , ) is a lake in central Switzerland and the fourth largest in the country. Geography The lake has a compli ...

, and immediately on leaving the tunnel the line crosses a bridge over the Alpnachersee arm of Lake Lucerne before entering Stansstad station. The Lopper II Tunnel is paralleled by the Kirchenwald Tunnel carrying the

A2 motorway A, or a, is the first Letter (alphabet), letter and the first vowel letter of the Latin alphabet, used in the modern English alphabet, and others worldwide. Its name in English is ''English alphabet#Letter names, a'' (pronounced ), plural ...

. The nearby Lopper Tunnel I is a rail tunnel on the Zentralbahn Brünig line, the two rail lines joining at Hergiswil station.

References

Tunnels in Nidwalden Railway tunnels in Switzerland Tunnels completed in 1964 {{Switzerland-struct-stub