Maymorn southern portal of the Rimutaka railway tunnel, which opened in 1955 and replaced the Rimutaka Incline railway line which ran over the Rimutaka Range. The old route passes within 40 metres over the tunnel's exit. Maymorn Maymorn is a rural area of Upper Hutt city in the Wellington region of New Zealand consisting of Rural Hill and Rural Valley Floor zones. For statistical purposes, Maymorn is counted as part of Te Marua in the New Zealand census. The usual resident 2013 population of the Te Marua area was 1,152. The area is a tranquil setting consists of lifestyle blocks and
Rimutaka Tunnel the former route's Pakuratahi Tunnel. The 117 metre (380 ft) high shaft was constructed after tests showed that the tunnel would not generate enough natural ventilation if diesel traction was used through the tunnel. Originally it had been envisaged that electric traction would be used by extending the 1500-volt DC overhead electrification beyond Upper Hutt to either Featherston or Masterton, but economic studies favoured diesel traction. The new formation included two crossing loops; at the new Maymorn Railway Station (116 wagons) and the Rimutaka Loop (95 wagons) at the eastern portal of the tunnel. There are four bridges including a