SPECIAL: Use your Promo Code “KiwiTraveler” for a 12.5% on all Underworld Rafting and GlowWorm Cave Adventures! (valid for tours up to 30/09/2021)

Underworld Rafting

Experience a Cave Rafting adventure like no other – complete with spectacular formations, water-sculpted canyons and one of the World’s best GlowWorm displays! Half way between Punakaiki and Westport, in the spectacular Paparoa National Park, lies the untouched Metro Te Ananui cave, your gateway to the adventure of a lifetime: Underworld Rafting.

On this adventure you will meet your guide at our Underworld Adventure Center in Charleston, who will equip you with wet suits, wet suit socks, boots, gloves and helmets. Dressed ready for your adventure, a short drive and the Nile River Rainforest Train will take you into the stunning West Coast Rainforest with towering limestone cliffs that create a magical backdrop for your adventure.

Underworld Rafting

A short walk leads to the cave entrances high above the Nile River. You will enter a hidden subterranean world leaving the daylight behind to explore a calcite paradise of stalactites and stalagmites, cross huge chambers, follow a maze of passages and wander through the heart of an ancient multi-leveled cave system. Enriched with illustrations, explanations and stories you will connect to the fragile precious world you explore and descend to the bottom level of the cave where the water guides you to a magical galaxy of glow-worms.

Astounded by this underground night sky, you will slowly float on an underground river to emerge back into daylight having used only the natural light of the awe inspiring display of glow worms as navigation.

You leave this special place floating in your tube down the fun gentle rapids of the Waitakere / Nile River surrounded by the lush rain forest.  Returning with the Rainforest Train back to Charleston this special hidden place stays behind but the memories will stay for a long time.

This is an award winning adventure at its best. Discover why!


NZD$195 per adult, NZD$155 per child (16 Years old and under)

Family Price NZD$650 (2 adults, 2 children)

Want to stay dry? Try our GlowWorm Cave Tour – set in the same stunning Te Ananui / Metro Cave system, this all-ages tour encompasses beautiful formations, fascinating information from our knowledgeable guides and of course our world-famous GlowWorm display!

Important Note: If you are booking an adventure within 24 hours of intended departure – please call us now on +64 3 7888168


Please be honest if you are unable to meet any of the following conditions as your inability to do so could put yourself and others at risk.

This activity requires “YOU”, the participant, to…
· Have a reasonable standard of fitness (comparable to being able to “walk unassisted for up to two hours”). There is a risk of stumbling, falling or slipping whilst walking through the cave which has the potential to cause a serious medical injury/misadventure.
· Be able to understand and follow instructions given to you by your Guide. This includes being sober and not under the influence of any substance that may impede your ability to safely navigate the cave and to follow instructions. (Failure to do so could put you and your party at considerable risk).

Should you have any doubts as to your ability to participate or follow instruction please call us on +6437888168 NOW for further advice and discussion.


* Changing into a two piece 5mm wetsuit, complete with wet suit socks, boots & gloves. You will also be provided with a helmet (with light) and life jacket.
* A 10-min drive and a 15 min Train Ride into the Nile River Canyon.
* Carrying an inner tube across the Nile River and up 131 steps (equivalent to a 6-7 story building) to the cave entrance.
* Carrying your inner tube over natural unformed surfaces, both to the cave, then through the large, highly decorated upper cave passages, where it is possible to slip, trip or otherwise fall.
* Floating through large GlowWorm-lit grottos, and paddling through the cave exit to the Nile River in your tube.
* Traversing a 700 m section of the Waitekeri/Nile River, including 4 short, shallow rapids and several deeper, still pools.
* Returning to our base by train and minibus.

Normal River Flow: In normal river flow the rapids are short and shallow. You can stand and walk to the water’s edge if required.
Medium River Flow: In medium river flow the rapids are fast and flushing. It is not possible to stand in the moving water and you are required to be confident in water in order to participate.
High River Flow: The Te Ananui Stream and Nile River sections of the trip will be cancelled when the river is in High Flow.

While unusual, there is a possibility that you may fall out of your tube while on the moving water. Should you fall out of your tube you may be under the water for a short time and you will need to be able to swim with your tube to the water’s edge prior to getting back into your tube. For this reason you should be confident in water.

There are no handrails, walkways or infrastructure inside the cave to assist you. You should therefore be confident with your footing and happy to navigate uneven surfaces and steps.

Underworld Adventures has a comprehensive Safety Management Plan and all guides are trained in how to avoid and mitigate identified risks.