Fiordland
Te Anau glowworm caves
The Te Anau glowworm caves offer a magical underground boat ride into a silent grotto lit by the bioluminescent shimmer of thousands of glowworms.
About this place
Your journey begins with a scenic cruise across Lake Te Anau to the western shores. Upon arrival, small groups are guided through the caves, which are geologically young and still being carved by the river that flows through them. You'll walk along purpose-built paths past sculpted rock formations and whirlpools before boarding a small punt for the main event.
Inside the grotto, you drift in complete silence and darkness, beneath a galaxy of tiny living lights. These are the larvae of a native gnat, Arachnocampa luminosa, which glow to attract prey. The quiet, dark environment is essential for their survival, creating a serene and unforgettable natural light show that feels worlds away from the surface.
Time needed
Approximately 2.5 hours return from Te Anau.
Best time
A fantastic year-round, all-weather activity.
Practical tips
- Photography and video are not permitted inside the glowworm grotto to protect the sensitive creatures.
- Wear comfortable, sturdy footwear as the paths inside the cave can be wet.
- As much of the tour is indoors, it's an excellent activity for a rainy day in Fiordland.