Dun Mountain Trail (Coppermine Trail)

Loop

The return leg is a complete change of pace. From the saddle, the trail plunges into a flowing descent. While popular with mountain bikers for its "flow," walkers will appreciate the expertly maintained switchbacks that lead you back into the cool, deep shadows of the native forest. You’ll pass the Maitai Dam and follow the Maitai River on a serene, flat track for the final cruise back toward Nelson. By the time you reach the end of the 9-hour journey, your legs will be heavy, but your soul will be full.

Highlights & Must-See Features

The Dun Mountain Trail is packed with "camera-out" moments, but these are the absolute standouts:

• The Mineral Belt: This is one of only a few places in the world where you can see such a dramatic geological shift. The high magnesium content in the soil is toxic to most plants, creating a "barren" landscape of dunite rock (which gives the mountain its name) that glows orange and red in the afternoon sun.
• Coppermine Saddle: This is the ultimate photo op. Standing at the highest point, you feel like you are on the spine of the island. It’s the perfect spot for a well-earned lunch.
• Historic Railway Remnants: Keep an eye out for the interpretative panels along the way. Learning about the men and horses who worked this rugged terrain in the 1860s adds a layer of respect to every step you take.
• Maitai River Path: The final section of the walk is a peaceful contrast to the high-alpine drama. The river is clear and inviting, and the flat terrain allows you to reflect on the day’s achievement.

Getting There

Accessing the trail is incredibly easy, which is part of its charm. There are two main ways to tackle the loop:

1. Brook Street Entrance (135 Brook St): This is the most popular starting point and the closest to Nelson city. There is a well-marked parking area with an information kiosk to help you get your bearings.
2. Maitai Valley Entrance: If you prefer to start near the end of the traditional loop or are staying at the Maitai Camping Ground, you can park about 6km up Maitai Valley Road.

Since this is a loop, you can start at either end, but most people prefer the "clockwise" route starting from the Brook Street entrance to enjoy the steady railway grade on the way up.

Wildlife Spotting

The trail is a haven for native New Zealand birdlife, particularly in the lower forested sections. Because the Brook Valley area has seen significant conservation efforts, the "bird orchestra" here is quite loud!

• Tūī and Bellbird (Korimako): You will hear these before you see them. Their melodic, bell-like calls follow you through the native bush sections.
• Weka: Don't be surprised if a cheeky Weka pops out of the ferns to inspect your backpack. They are curious (and occasionally thieving!) birds, so keep an eye on your snacks.
• Kererū: The heavy "whoosh-whoosh" of wings usually signals the flight of the New Zealand Wood Pigeon. Look for them perched in the branches of larger native trees.
• Rifleman (Tītipounamu): Keep a sharp eye out for NZ’s smallest bird. They are tiny, green, and move incredibly fast.

Tip: The best time for birdwatching is the first two hours after sunrise, when the forest is most active.

Seasonal Magic & Practical Tips

The Dun Mountain Trail is open year-round, but each season brings a different vibe:

• Spring & Autumn: These are arguably the best times to go. The temperatures are mild, which is vital for a 9-hour trek, and the light in the Mineral Belt is particularly golden.
• Summer: It can get very hot and dry. Since much of the upper trail is exposed with no shade, sun protection is non-negotiable.
• Winter: Crisp, clear days offer the best visibility, but it can be biting cold at the saddle. You may even see a dusting of snow on the surrounding peaks.

• Start Early: This is a 9-hour walk. Aim to be on the trail by 8:00 am to ensure you are back before dusk.
• Water is Key: There are very few places to refill water once you leave the valley floor. Carry at least 2-3 litres per person.
• Gear: Even if it’s sunny in Nelson, the weather at 800 metres can turn on a dime. Bring a windproof/waterproof jacket and a warm layer.
• Fitness Note: While the track is well-maintained, the 40km distance makes this a "hard" walk. It is not recommended for young children or those without a high level of walking fitness.
• No Dogs: To protect the local wildlife, dogs are not permitted on this trail.

Local & Regional Context

The area is steeped in significance. Long before Europeans arrived, Māori utilised the region to source argillite (pakohe), a hard stone used for making tools and weapons. The mountain itself, Maungatapu, holds deep cultural meaning for local iwi.

The colonial history is equally fascinating. The discovery of copper and chromite led to a mining boom, and the construction of the railway was a massive feat of engineering for the 1860s. Today, the trail is part of the Ngā Haerenga New Zealand Great Rides network. While it is managed primarily as a mountain biking trail, its dual-use status makes it one of the premier long-distance walking loops in the country.

After the Walk

After 40km on your feet, you’ll be ready for some serious refueling. Nelson’s cafe culture is legendary, and there are several spots near the trailhead perfect for hikers:

• Melrose House Cafe: Just 1.1km from the Brook Street entrance, this historic villa is the perfect place for a "victory" high tea or a giant slice of cake in a beautiful garden setting.
• Victus Coffee & Eatery: Located in the city centre, this is the go-to for a healthy, hearty brunch and excellent coffee. Their whole-foods approach is exactly what a tired body needs.
• DeVille Cafe and Bar: If you finish in the afternoon and fancy a craft beer, DeVille’s lush garden and Texan-inspired menu offer a fantastic, laid-back atmosphere.
• Smugglers Pub & Cafe: If you've worked up a massive appetite, head over toward Tahunanui for a nautical-themed meal. Their portions are generous, and the atmosphere is always lively.

The Dun Mountain Trail is more than just a walk; it’s a journey through time and across landscapes that feel truly ancient. It’s a long day, but when you’re standing on that red-rock saddle looking out over the blue Pacific, you’ll know exactly why this is considered a Nelson classic.

2km away

A modern, friendly cafe in the heart of Nelson city, known for delicious whole foods, top-notch Ozone coffee, and a spacious outdoor area. They offer an impressive brunch menu and cater to various dietary needs.