Locomotive POV - Arthurs Pass to Otira - Otira Tunnel 8566 m long

Cab view through the 8566 metre long Otira Tunnel in New Zealand's South Island.
The Otira Tunnel is New Zealand's 3rd longest rail tunnel :
Kaimai - 8879 m - opened 12 September 1978 - near Apata on the East Coast Main Trunk railway line to Tauranga, the longest rail tunnel in New Zealand.
Rimutaka - 8798 m - opened 3 November 1955 - between Upper Hutt (Wellington) and Featherston (Wairarapa), replaced the Rimutaka Incline, a Fell mountain railway, the longest tunnel in New Zealand that carries regular passenger trains.
Otira - 8566 m - opened 1923 - between Arthur's Pass and Otira, in the Southern Alps / Kā Tiritiri o te Moana on the transalpine Midland line - continuous 1 in 33 grade - electrified until 1997.