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
Rimutaka Incline "temporary" measure, it outlasted the second such system in Brazil by 72 years. Construction of the Rimutaka Incline was included in two contracts that were let for the building of the original Wairarapa Line. These contracts were known as the Summit contract and the Incline contract. This contract included the excavation of Summit station yard and related drainage, Summit tunnel, and formation work to a point 26 chains (523 m) beyond the tunnel. It was the shortest contract of those let for the line, it was finished by the original contractor, and it had the least number of alterations. Work