Metro Cave / Te Ananui Cave is a wild glowworm cave on the West Coast of New Zealand's South Island, and half the pages you find about it are actually describing Waitomo. Wrong island. This cave sits inland from Charleston in Paparoa National Park. You get in by bush tram and suspension bridge, and the guided tour runs about 3.5 hours return at $165 per adult. Worth the half-day if you want glowworms without a queue.
Last updated: 2026-07-12
One cave, two names
Te Ananui is the Māori name. Metro Cave is the older settler name. You will see them stacked together as Metro Cave / Te Ananui Cave, and that is exactly why the search results are a mess.
It is limestone country inland from Charleston, on the West Coast. If a write-up mentions the Waikato, or a boat gliding under the lights, close the tab. That is Waitomo, a different trip in a different part of the country. Te Ananui you walk into on foot.
Inside, you get dry upper passages and a stream running below. The glowworms gather where it is dark and damp. Here is the small detail most pages skip: the light is a larva fishing for prey, not mood lighting. The New Zealand glowworm is worth two minutes of reading before you go.
Getting there and what the trip actually involves
You do not stroll up to a hole in a hillside. A bush tram takes you in through native forest, then you cross a suspension bridge over the river, then you reach the cave. The journey is the ticket, not the warm-up.
It is a short drive from town: about 20 minutes from Westport, 30 minutes from Punakaiki with its pancake rocks. So if you are already driving this coast, it slots in without a real detour.
Budget the half-day. The tour runs around 3.5 hours return, and it leaves on a fixed timetable. Summer, October to April, departs at 9am and 11.30am. Winter, May to September, has one 10am trip. Book ahead, because turning up on spec is how you spend the morning in a Westport café instead.
The shape of a visit, in order, so you know what you are signing up for:
- Tram in through the forest, and this is the part people underrate
- Suspension bridge over the river, one at a time, no rush
- Cave walk through dry passage and past the stream below
- Glowworms in the dark chambers, with the lights off and your eyes adjusting
- Tram back out, usually quieter than the way in
For more of the same limestone on foot, the walks around Karamea and the Oparara Basin sit further up this coast.
Who it suits, and who should skip it
Go if you want glowworms without a crowd shuffling past you on a boat. You walk in. The tram and the bridge give it a proper expedition feel, and the guide has room to actually talk to you.
Families work, with one hard limit: minimum age five. Younger kids are out. School-age children who can manage a forest walk usually love it.
Skip it if you want a ten-minute look and a gift shop. Half your day goes, and the ground underfoot is uneven and slick near the water. If your footing is not steady, think hard before you book.
The price is the real cost
At $165 per adult and $115 per child, this is not a casual stop. For a family of four that is a serious line in the budget, and meanwhile this coast is stacked with walks that cost nothing.
So what are you paying for? The guiding, the access, and the tram-and-bridge setup. You are not paying for the worms. I would still hand over the money once, because the walk-in beats the conveyor belt. Twice, no.
If you would rather stay above ground, a few of the short walks worth stopping for on the road to Karamea are free and take under an hour.
What the marketing gets right, and what it oversells
The quieter-than-Waitomo pitch is fair. Fewer people, more forest, a real walk in. Trust that part.
Ignore the "untouched" and "secret" language. This is a commercial guided tour on a fixed schedule inside a national park, and that is precisely why the cave is still in good shape. Limited numbers and guide-only access keep it worth seeing. Call it what it is: managed, and better for it.
The trade-off is plain. You pay more and give up more of your day than a shorter North Island trip. In return, nobody is rushing you.
Photos, clothing, and what to carry
Cameras are permitted. Tripods are not. As a result you will be hand-holding in near-dark, and your phone will not catch what your eye does. Lower your expectations now and enjoy the display instead of fighting it.
Layers matter, because you will be moving between forest air and cave air, and the cave is damp and cool all year. Grippy closed shoes matter more than anything else you bring.
Here is what I would carry, and why:
- A warm layer you can take off once the walking warms you up
- Shoes with real grip, because smooth soles and wet limestone do not mix
- A light rain layer for the tram and the bridge, since both are open to the weather
- Camera or phone, no tripod, so keep it in a pocket you can reach
- Water and a snack, because half a day is longer than it sounds
Book a summer 9am slot, wear the shoes you would hike in, and let the tour do the rest.
FAQ
Is Metro Cave the same as Te Ananui Cave?
Yes, one cave, two names, sitting inland from Charleston. Te Ananui is the Māori name, and most listings write both together, which is half the reason people think there are two places to visit.
Is it the same as the Waitomo glowworm caves?
No, and this catches people constantly. Waitomo is a North Island boat tour. Te Ananui is a walk-in cave in Paparoa National Park on the South Island's West Coast.
What is the youngest age for the tour?
Five years. Below that, children cannot join. The walking and the terrain are the reason, so do not turn up with a four-year-old and hope for a kind guide.
How fit do I need to be?
Fitter than for a car-park lookout, but nowhere near mountaineering. Expect uneven, sometimes slippery ground across a trip of about 3.5 hours return. If you are unsure, ring the operator and describe your knees honestly.
When do tours run through the year?
Year-round, on a fixed timetable. Summer, October to April, leaves at 9am and 11.30am. Winter, May to September, runs a single 10am departure, so the day fills up fast and you want that slot booked.
