The Manapouri Power Station, an underground hydroelectric power station, has no road access and the original construction took almost eight million man hours to construct.
There is no road access into the site; a regular boat service ferries power station workers in 35 km across the lake from Pearl Harbour, located in the town of Manapouri at the southeast corner of the lake. The original construction of the power station cost NZ$135.5 million (NZ$2.15 billion in 2013 dollars), involved almost 8 million man hours to construct, and claimed the lives of 16 workers. Manapouri Power Station is an underground hydroelectric power station on the western arm of Lake Manapouri in Fiordland National Park, in the South Island of New Zealand. 
