Railway electrification in New Zealand Railway electrification in New Zealand Railway electrification was initially adopted by the New Zealand Railways in New Zealand for long tunnels; the Otira Tunnel, the Lyttelton Rail Tunnel and the two Tawa Tunnels of the Tawa Flat Deviation. Electrification of Wellington suburban services started with the Johnsonville Line and Kapiti Line out of Wellington from the 1930s. Auckland suburban services were electrified in 2014–15. Electrification of long distance services on the North Island Main Trunk (NIMT) dates from 1986, although KiwiRail is now considering diesel operation of the NIMT. New long tunnels e.g. the Rimutaka Tunnel and the Kaimai Tunnel
Dularcha Railway Tunnel was closed off inside the opening of the south portal when it was leased for mushroom growing . An unsealed vehicular track, in part following the original rail route, passes through the National Park and the tunnel. The road connects the two communities of Landsborough and Mooloola. The Dularcha Railway Tunnel was identified in the Queensland Railway Heritage Places Study: Stage 2. Volume 4. Built through a sandstone ridge, Dularcha railway tunnel is located within Dularcha National Park, north of Landsborough. Dominant vegetation in the area is brush box, flooded gums and ironbarks and stringybarks along the ridge. Part of