Key Summit Alpine Nature Walk

Out and back

To the north, you can look straight down the throat of the Hollyford Valley, a deep, glaciated trench that looks like it was carved by a giant’s axe. To the west, the rugged, snow-capped peaks of the Darran Mountains dominate the skyline. One of the most photogenic sights is Lake Marian, a stunning alpine lake cradled in a "hanging valley" across the way. From this height, the lake looks like a sapphire nestled among the grey stone peaks.

Make sure you take the time to walk the full Alpine Nature Walk loop at the summit. This self-guided section is dotted with interpretive signs that explain the "Key" in Key Summit. This location is a rare geographic crossroads—a triple watershed. Depending on exactly where a raindrop falls here, it could end up flowing into the Hollyford River to the Tasman Sea, the Eglinton River to the South Pacific, or the Glaisnock River toward the Southern Ocean. It’s a humbling thought to stand at the very point where the island’s waters decide their destiny.

Getting There Accessing the trailhead is straightforward, as it sits right on the iconic Milford Road (State Highway 94). The walk starts at The Divide car park, which is approximately 85 kilometres from Te Anau. It’s a scenic 1 hour and 15-minute drive, but you’ll likely want to allow more time because the drive itself is full of photo stops.

The Divide is a major hub, serving as the western trailhead for the Routeburn Track, so ample parking is available. However, because this is one of the most popular spots in Fiordland, the car park can fill up quickly during the peak summer months (December to February). There is a sheltered area with benches and informative displays at the car park—perfect for a final gear check before you head up. Please note that while the walk is family-friendly, it is located within a National Park, so it is not dog-friendly.

Wildlife Spotting Fiordland is a stronghold for New Zealand’s unique birdlife, and the Key Summit track is a fantastic place for a bit of "twitching."

In the lower beech forest, keep your eyes peeled for the New Zealand Robin (toutouwai). These friendly little birds are incredibly inquisitive and will often hop right up to your boots to see if you’ve stirred up any tasty insects in the leaf litter. You’ll also likely hear the melodic, bell-like chiming of the Bellbird (korimako) and the distinctive "whoosh-whoosh" of the Kererū (New Zealand Pigeon) flying overhead.

As you reach the subalpine scrub near the summit, keep a sharp eye on the sky for the Kea. These world-famous alpine parrots are highly intelligent and notoriously cheeky. If you see one, keep a close watch on your backpack! While they are a joy to watch, please remember never to feed them, as it harms their ability to survive in the wild. You might also spot a Weka skulking through the tussocks—a flightless bird that looks a bit like a sturdy brown hen and shares the Kea's curious personality.

Seasonal Magic & Practical Tips While the Key Summit track is technically open year-round, each season brings a different flavour to the experience:

• Spring (September–November): The alpine flowers begin to bloom, and the surrounding peaks are often still heavily laden with snow, making for dramatic photos.
• Summer (December–February): The most settled weather, but also the busiest. The long daylight hours mean you can start later in the afternoon to avoid the midday crowds.
• Autumn (March–May): My personal favourite. The air is crisp and clear, and the light has a golden quality that makes the Hollyford Valley look spectacular.
• Winter (June–August): A different beast entirely. The track can be covered in snow and ice, requiring crampons or at least solid hiking boots with good grip. The views of the snow-covered Darrans are world-class, but you must check the avalanche forecast before heading out.

What to Bring: Fiordland is one of the wettest places on earth. Even if it’s sunny in Te Anau, the weather at The Divide can turn in minutes. Always carry a waterproof rain jacket and an extra warm layer (merino or fleece). Sturdy walking shoes or hiking boots are recommended, as the track can be slippery when wet. Bring plenty of water and some high-energy snacks to enjoy at the summit while you soak in the views. Sun protection is also vital; the NZ sun is fierce, especially at elevation.

Local & Regional Context The area around Key Summit and The Divide holds deep significance. For centuries, this region was a vital route for Māori, who travelled through these rugged passes in search of pounamu (greenstone) on the West Coast. The trails they forged laid the groundwork for many of the tramping tracks we enjoy today.

Geologically, the landscape is a masterclass in glaciation. The U-shaped Hollyford Valley was carved by massive glaciers during the last ice age, leaving behind the sheer cliffs and "hanging valleys" like the one containing Lake Marian. Standing at the summit, you are witnessing the results of millions of years of tectonic uplift and glacial erosion. It is part of Te Wahipounamu, a UNESCO World Heritage site, recognised for its outstanding natural value to humanity.

After the Walk After descending back to The Divide, you’ll likely have worked up an appetite. Since there are no shops in the immediate vicinity, most hikers head back towards Te Anau or continue on to Milford Sound.

If you're heading back to Te Anau, make a stop at Miles Better Pies. It’s a local institution, and their venison or steak pies are the ultimate post-hike fuel. For something more substantial, the Redcliff Cafe offers a cosy, rustic atmosphere with a great selection of local wines and hearty Kiwi fare. If you just need a caffeine hit and a slice of cake, Sandfly Cafe is a favourite among trampers for its relaxed vibe and great views of Lake Te Anau.

Whether you're a seasoned hiker or a casual traveller, the Key Summit Alpine Nature Walk is a quintessential Fiordland experience. It’s a short walk that leaves a long-lasting impression.

Hemiphaga novaeseelandiae

New Zealand wood pigeon, a large native bird with iridescent green and purple plumage. Important for seed dispersal of native trees.

Best time: Year-round