Mangaroa railway station war. After the war the depot was a disposal site for surplus stores until RNZAF use ceased in July 1949, at which time it is assumed that the site was transferred to the NZ Army for their use. Prior to the construction of the Rimutaka Tunnel, several proposals for a tunnel under the Rimutaka Ranges to bypass the Incline section involved tunnels with a western portal to the north-east of Mangaroa station. In 1898 a survey was completed for a tunnel between Mangaroa and Cross Creek. The idea received a great deal of attention, but ultimately went nowhere as such
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