The Wilmot Pass is located on the main divide of New Zealand’s South Island. It is 2,201 feet high and connects Doubtful Sound, a deep indentation on the coast, to the valley of the West Arm of Lake Manapouri.
Uniquely, the pass is crossed by a road that connects to no other road. It was constructed to facilitate the development of the Lake Manapouri Hydroelectricity Project. It is the only road on the New Zealand mainland that is not connected to the main road network.
Until the 1960s, the Wilmot Pass was only accessible from the sea. The 21 km long, unconnected road was then built between 1963 and 1965 to offer access to the pass.