| Lake Manapouri is NZ's second deepest lake, over 1000ft deep, and along with Doubtful Sound, it is used to generate electricity |
Lake Manapouri is 591ft (180m) above sea level, so they have water falling down to sea level through tunnels, where it spins generators to make electricity, and then flows out into Doubtful Sound, which is also a fiord, not a sound |
Doubtful Sound, from atop Wilmot Pass. The road from the power station at Manapouri to Doubtful Sound is gravel, and NZ's most expensive road, something like $2.50 per centimeter of road. |