Homer Tunnel

The Homer Tunnel is the only road access to Milford Sound from the inland side (via the Milford Sound Highway). Without it, the journey would be impossible by vehicle. It's a single lane, meaning traffic can only pass in one direction at a time.

Homer suggested that a tunnel through the saddle would provide access to the Milford area. Government workers began the tunnel in 1935 after lobbying by J. Cockburn of the Southland Progress League, and the completion of at least a rough road to the eastern portal site in the same year.

The tunnel is a fairly steep 1:10 gradient running east to west. The tunnel passes through the Darran mountain range, below the Homer Saddle, and into the Cleddau Valley, 945 metres above sea level.

It's a long drive, so take breaks when you need them. You'll need to focus on the narrow and winding road if you're driving – if you want to admire the view, pull over. If you want to have rest stops along the way, public toilets are available in Te Anau, Knob's Flat, and at Milford.