Pipelines - Mangahao Electric Power Scheme
Shown here are the large pipelines entering the basement and reinforcing for concrete within the Power House construction. The Mangahao Power Station provides hydroelectric power and is situated near the town of Shannon. It serves Wellington, Horowhenua, Taranaki, Hawkes Bay, and the Wairarapa. After being delayed by the first world war construction began in late 1919 and the station opened in November 1924.