Nalayini Brito-Davies found what she was looking for on foot. Walking the Milford Track, the New Zealander who now leads DarkSky International was struck by how thoroughly dark the Fiordland night was, and she went on to write the letter nominating the national park for the organisation's recognition. On Thursday that nomination came good, with Fiordland National Park named an International Dark Sky Park.

The scale of it is hard to overstate. At 12,607 square kilometres, Fiordland is the biggest national park in Aotearoa, and the new status makes it the third-largest International Dark Sky Park anywhere and the largest in the Southern Hemisphere, according to Great South, the regional development agency that led the bid. It also gives Murihiku Southland a second internationally recognised dark sky place, alongside the dark sky sanctuary on Stewart Island Rakiura, which the Southland Tribune notes was recognised in 2019.

Getting there took years. Great South says it led the work alongside the Department of Conservation, with mana whenua, people living in Fiordland, tourism and conservation groups, businesses and local dark sky advocates all involved. The job included measuring the quality of the sky, checking public lighting and fixing what needed fixing, and a good deal of community education. A Lighting Management Plan will now shape how outdoor lights are used in the park, and the agency says the status carries an ongoing duty to keep monitoring, manage lighting, and explore cultural storytelling and visitor experiences after dark.

For DOC, the point is the wildlife. Te Anau operations manager John Lucas said looking after the park's natural darkness was part of looking after its ecosystems. "Many native species rely on natural light cycles," he said in the Great South announcement. "This accreditation recognises the importance of managing artificial light carefully, allowing lighting where it is needed for safety and essential operations while limiting its impact on the night environment."

DarkSky International's places programme manager, Amber Harrison, pointed to the cultural side as well. Ngāi Tahu know Fiordland as Te Rua-o-te-Moko, and the night sky is tied to mātauranga Māori, navigation, the seasons and Matariki. "Protecting its night skies is a natural extension of protecting the resources of the land," Harrison said, adding that work was under way to build dark sky protection into future district planning "as the region grows".

Lake Te Anau at night, just outside the town that Great South hopes more visitors will stay in after the new status. File photo. Photo: Zhexu14 / Wikimedia Commons, CC BY 3.0
Lake Te Anau at night, just outside the town that Great South hopes more visitors will stay in after the new status. File photo. Photo: Zhexu14 / Wikimedia Commons, CC BY 3.0

There is a tourism hope folded into all this too. Many international visitors have long treated Fiordland as a day trip from Queenstown rather than spending a night in Te Anau, the Tribune reported, and Great South destination development manager Amie Young believes the night sky could help change that. "From a tourism perspective, the benefits I think are that this is a nighttime experience," she told the Tribune, pointing to stargazing and astrophotography as the kind of things that "really encourage people to stay overnight and for a longer length of stay". In the agency's own announcement she called the accreditation "a significant achievement for Fiordland and for Murihiku Southland's wider dark sky story".

Fiordland now sits among more than 270 places recognised under the International Dark Sky Places programme, which began in 2001, and it already holds UNESCO World Heritage standing as part of Te Wāhipounamu. For Brito-Davies, the first person from outside the United States to serve as DarkSky International's president, it is also a step in a bigger campaign to have New Zealand recognised as a "Dark Sky Nation".

Mackinnon Pass, seen from the Milford Track, where DarkSky International president Nalayini Brito-Davies experienced Fiordland's night skies. File photo. Photo: AlasdairW / Wikimedia Commons, CC BY-SA 3.0
Mackinnon Pass, seen from the Milford Track, where DarkSky International president Nalayini Brito-Davies experienced Fiordland's night skies. File photo. Photo: AlasdairW / Wikimedia Commons, CC BY-SA 3.0

"The certification of Fiordland, which accounts for 4.7% of this country's land mass, is a huge step towards achieving the ultimate goal of Dark Sky Nationhood for New Zealand," she wrote in her nomination. A walk on the Milford Track helped get it there, and the hope now is that many more people will linger long enough after dark to see what she saw.