The name Knobs Flat comes from the rich terrain where kames and hummocks are left behind by retreating glaciers; they are composed of stratified sand and gravel laid down by glacial meltwater. Hiding amongst the trees is one such kame.
This series follows our journey along State Highway 94 as we travelled from Te Anau to Milford Sound. The route is 73 miles (119km) long and it is regarded as one of the most scenic roads in New Zealand; with a peak elevation of 940m, it is also one of the country's highest. The road travels up the eastern side of Lake Te Anau along the lateral moraine left behind after the retreat of the glaciers at the end of the last ice age.
From Te Anau Downs, the road veers right and enters the Eglinton Valley. The road then runs parallel to the right side of the Eglinton River for 20 miles while it passes through Knobs Flat. At Cascade Creek, the road emerges onto the shorelines of Lake Gunn and Lake Fergus. The road then passes through a saddle and emerges at the upper section of the Hollyford Valley.
After Hollyford, the road veers to the west and rises steadily along the valley to its highest point at the Homer Tunnel. At 1270 metres long it is the second-longest road tunnel in New Zealand. The road then emerges at the head of the Cleddau Valley and the road spends its last 10 miles descending along the valley to Milford Sound.