According to our guide, in 2005, a huge, $6.5 million investment went into the Ruakuri Cave, to install impressive, safe, high-quality metal boardwalks throughout the cave network. This infrastructure improvement allowed for excellent views of the cave's waterfalls, rivers, blackwater rafting/caving opportunities, and the glowworms themselves!
The tour itself was about 1.5 hours long and the guide was quite knowledgeable about the the cave system.
Part of the excitement of the whole cave experience was entering the cave via the 100+ foot drop - a circular passageway around the edge of the cave tunnel. From there, things only got better!