Rimutaka Tunnel The first shot was fired in 1948 when the Public Works Department started the tunnel with bores of at the western end and at the eastern end. A contract for completing the tunnel was let to a consortium of Morrison Knudsen Inc. and Downer and Company on 7 May 1951. The work commenced at the west end in July 1951 and at the east end in August. The contract was expected to be completed in four years, but the headings met on 20 April 1954 with the concrete lining finished a month later. New Zealand Railways took possession of the
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