Secretary Island

Overview

About Secretary Island

Rugged, steep, and almost entirely bush‑clad, Secretary Island rises straight out of the fiords at the mouth of Doubtful Sound / Patea and Thompson Sound. Its skyline is dominated by Mount Grono (1196 m), with several other peaks over 1000 m and three small alpine lakes, including Secretary Lake at 550 m. The isolation has kept it close to pristine—one of Fiordland’s most intact island ecosystems.

Why stop

Rare, near‑pristine island ecosystem with standout native birdlife
Dramatic fiord scenery between Doubtful and Thompson Sounds

Heads up

Public access is limited and often restricted for conservation
No visitor facilities or marked tracks; landings can be challenging

This is a living conservation project. Managed by the Department of Conservation, the island has no rats, mice, or possums; stoats and deer are the remaining problem animals and are actively controlled. That predator profile makes it a refuge for native birds and plants that struggle on the mainland. It’s also simply beautiful: steep forested ridges, waterfalls tumbling to Blanket Bay, and dramatic sea‑scoured headlands facing the Tasman.

Parkwolf’s verdictWhy it’s special

Map

Where it is

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Full map

SightSecretary Island-45.23878, 166.93777

Keep this map with you offline in the Parkwolf app

Local know-how

Tips for visiting Secretary Island

Experience it from a Doubtful Sound cruise if you’re not on a permitted landing.
Clean and inspect all gear—strict biosecurity applies to protect the island.
Carry binoculars for spotting birds along the coastline and in the canopy.
Download offline maps; mobile coverage in Fiordland is sparse.
Weather turns fast—plan for rain, wind, and rough seas even on fair days.

Plan your stop

Before you go

Best time to visit

If you’re cruising Doubtful Sound, any clear window rewards you with views of the island’s ridges and waterfalls.
Morning and late‑day light can be gorgeous on the steep, forested faces when the weather breaks.
Crowds aren’t the issue here—weather and sea state are. Aim for settled conditions if trying for a permitted landing.

Access and what to expect

Secretary Island is not set up for tourism. Most people experience it from the water on Doubtful Sound cruises passing its shores or the narrow Te Awaatu Channel (The Gut). Landings—when allowed—are tightly controlled for biosecurity. There are no public tracks, huts, restrooms, or stores. Any structures (like the Blanket Bay wharf or operational huts) serve fisheries or conservation staff, not visitors. Weather is classic Fiordland: very wet and quick to change, and the exposed, rocky coast makes boat access tricky.

A park ranger sits on a dash-mounted phone, talking, as Parkwolf’s Tour Guide plays “Army Cutworm Moths: A Grizzly Bear Buffet” on Grand Loop Road below Dunraven Pass in Yellowstone — Parkwolf Tour GuideThe highest, rockiest slopes around here are a summer buffet for grizzly bears.

Fiordland Tour Guide

Your drive to Secretary Island, narrated.

Parkwolf is a GPS audio tour guide for Fiordland National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.

See the Fiordland audio tour

126 audio storiesacross Fiordland’s roads, triggered by GPS as you drive
Wildlife heatmapsfor Kea, Fiordland Penguin, Blue Duck, and 13 more
Works offlinemaps, 68 trails, 124 places, and audio download before you lose signal
CarPlay readysimple controls built for the drive

★★★★★

“Fantastic app with many points of information… It’s great to just turn on while you’re driving and it gives you an audio tour of the national Park. We love it!!!!”

JMJamesApp Store review

4.7 from 8,600+ ratings

Guide

More about Secretary Island

WildlifeExpect an island “covered in birds” feel—this is prime habitat for threatened species like…

Expect an island “covered in birds” feel—this is prime habitat for threatened species like kākā, kākāriki, kārearea (NZ falcon), northern tokoeka (kiwi), and the Fiordland crested penguin. Unique invertebrates and healthy mistletoes thrive thanks to the lack of common mammalian pests. Keep binoculars ready on boat transits; the surrounding fiords add the chance for marine life encounters.

Landscape notesThe island is roughly triangular and deeply incised by steep valleys and ridgelines.

The island is roughly triangular and deeply incised by steep valleys and ridgelines. Its fast rise from sea level to alpine heights in just a few kilometers creates big‑drama views and frequent waterfalls after rain. The Gut narrows to about 200 m, amplifying the sense of scale as you slip between the island and the mainland.

Need‑to‑knowBiosecurity is non‑negotiable: clean and check all gear to keep the island pest‑free.

Biosecurity is non‑negotiable: clean and check all gear to keep the island pest‑free.
Check with DOC for any access permissions or closures before planning to land.
There’s no infrastructure—bring everything you need and plan conservatively for Fiordland’s weather.

Wildlife

Wildlife in Fiordland

All Fiordland wildlife maps

1,181 sightingsKeaMost seen around 10 AMSighting map

199 sightingsFiordland PenguinMost seen around 7 PMSighting map

228 sightingsBlue DuckMost seen around 5 PMSighting map

32 sightingsBottlenose DolphinMost seen around 5 PMSighting map

247 sightingsNew Zealand Fur SealMost seen around 6 PMSighting map

58 sightingsKākāMost seen around 6 PMSighting map

Sighting maps show where each species has been reported across Fiordland. Wildlife moves, so no sighting is guaranteed.