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
Deliktaş Tunnel end of 2011, all construction works were finished. Following the installation of signalization facilities, and completing the test runs with freight trains, the tunnel was put into service in late 2012. The tunnel was drilled by the New Austrian Tunnelling method (NATM). With its length of , the Deliktaş Tunnel is Turkey's longest single track railway tunnel. The tunnel is wide and has a clearance of . It is also the only railway tunnel of the country, which features built-in lighting, ventilation and firefighting facilities. The automated lighting system controls tunnel lights installed at every through motion detectors. According to