Lopper I Rail Tunnel

The Lopper I Rail Tunnel is a railway tunnel in central Switzerland. The tunnel connects Hergiswil in the canton of Nidwalden with Alpnach in the canton of Obwalden. It forms part of the Zentralbahn Brünig line, which links Lucerne with Interlaken and the Bernese Oberland, between Hergiswil station and Alpnachstad station. It is 1,186 metres (3,891 ft) in length, and carries metre gauge (1,000 mm or 3 ft 3+3⁄8 in) track electrified at 11 kV AC 16 2/3 Hz using overhead catenary. The tunnel runs under the Lopper, a shoulder of Mount Pilatus which extends into Lake Lucerne.^[1][2]

Lopper I Rail Tunnel

Overview
Line	Brünig
Location	Nidwalden/Obwalden, Switzerland
Coordinates	46.975045°N 8.309695°E / 46.975045; 8.309695
Status	Active
Operation
Owner	Zentralbahn
Operator	Zentralbahn
Traffic	Rail
Character	Passenger and freight
Technical
Length	1,186 metres (3,891 ft)
No. of tracks	1
Track gauge	1,000 mm (3 ft 3+3⁄8 in)
Electrified	Overhead catenary 11 kV AC 16 2/3 Hz

The Lopper I Tunnel is paralleled by the Lopper road tunnel, carrying the A8 motorway. The nearby Lopper II Tunnel is a rail tunnel on the Zentralbahn Luzern–Stans–Engelberg line, the two rail lines joining at Hergiswil station.^[1][2]