City Rail Link (CRL) – Auckland Underground Rail
CRL is an underground railway project passing under the city center, aiming to transform Auckland’s rail system. It includes 3.45 kilometers of twin-line tunnels.

There will be a total of 4 new stations within the project scope:

* Waitematā (Britomart) — conversion of the existing station into a “through-station” 

* Maungawhau — redeveloped station connected to the Western Line

* Te Waihorotiu (center)

* Karanga-a-Hape (center) 

Primary objectives of the project: To make the Auckland city center a “loop” with the rail network; to increase train capacity; to facilitate inner-city transportation; to provide shorter journey times.