Kaimai Tunnel Kaimai Tunnel The Kaimai Tunnel is a railway tunnel through the Kaimai Range in the North Island of New Zealand. Since it was opened in 1978, it has held the title of longest tunnel, at 8.879 kilometres, in New Zealand, assuming this distinction from the previous title holder, the Rimutaka Tunnel. It is part of the Kaimai Deviation, which was constructed to bypass the old route of the East Coast Main Trunk Railway through the Karangahake Gorge (part of which has been preserved as the Goldfields Railway). The Kaimai Deviation is a 24 km line between Waharoa and Apata, including
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