Black Water Rafting at its best.
People love this. Blackwater Rafting is not like white water rafting. It's much gentler and you use car inner tubes instead of white water rafts. This trip spends about twice the underground time of any comparable blackwater trip. Explore the cave by walking, wading as well as swimming and tubing.
There is lots of fun to be had along the way. See stalactite & stalagmites plus weird rock sculptures. Parts of the cave are lit by thousands of New Zealand's legendary glowworms. No prior experience is required and it is suitable for children down to 12 years old (minimum 40kg). Your wet-suit gives you lots of flotation - so you don't need to be a great swimmer. No abseiling on this option.